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                                                  Registration No. 333-


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549




                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933



                              XYBERNAUT CORPORATION
             (Exact name of registrant as specified in its charter)

         Delaware                                            54-1799851
   ----------------------                                  --------------
(State or other jurisdiction of                           (I.R.S. Employer
Incorporation or organization)                           Identification No.)

                             12701 Fair Lakes Circle
                             Fairfax, Virginia 22033
                                 (703) 631-6925
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               (Address, including zip code, and telephone number,
        Including area code, of registrant's principal executive offices)

                                Edward G. Newman
                             12701 Fair Lakes Circle
                             Fairfax, Virginia 22033
                                 (703) 631-6925
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            (Name, address, including zip code, and telephone number,
                   Including area code, of agent for service)

                                    Copy to:

                           Martin Eric Weisberg, Esq.
                      Jenkens & Gilchrist Parker Chapin LLP
                              The Chrysler Building
                              405 Lexington Avenue
                            New York, New York 10174
                                 (212) 704-6000



         Approximate date of commencement of proposed sale to public: As soon as
practicable after the effective date of this Registration Statement.

         If the only  securities  on this Form are  being  offered  pursuant  to
dividend or interest reinvestment plans, please check the following box. [ ]

         If any of the  securities  being  registered  on  this  Form  are to be
offered  on a  delayed  or  continuous  basis  pursuant  to Rule 415  under  the
Securities Act of 1933,  other than  securities  offered only in connection with
dividend or interest reinvestment plans, check the following box. [X]

         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. [ ] __________

         If this  Form is a  post-effective  amendment  filed  pursuant  to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act  registration   statement  number  of  the  earlier  effective  registration
statement for the same offering. [ ]

         If delivery of the  prospectus  is expected to be made pursuant to Rule
434, please check the following box. [ ]





                         CALCULATION OF REGISTRATION FEE
- ---------------------------------------------------------------------------------------------------------------------------
                                                                     Proposed Maximum    Proposed Maximum      Amount of
            Title of Each Class                   Amount to be        Offering Price         Aggregate       Registration
       of Securities to be Registered            Registered(1)          Per Share         Offering Price          Fee(6)
- ---------------------------------------------------------------------------------------------------------------------------
                                                                                                
Common Stock, $.01 par value per share...           9,131,016(2)          $ 2.26(4)        $20,636,096         $1,669.46
- ---------------------------------------------------------------------------------------------------------------------------
Common Stock, $.01 par value per share.....      3,424,658(2)(3)          $  .91(5)        $3,116,439          $  252.12
- ---------------------------------------------------------------------------------------------------------------------------
Common Stock, $.01 par value per share..           800,000(2)(3)          $1.53(5)         $1,224,000          $   99.02
- ---------------------------------------------------------------------------------------------------------------------------
Total Registration Fee..................                                                                       $2,020.60
- ---------------------------------------------------------------------------------------------------------------------------


(1)  Represents  the shares of common stock being  registered  for resale by the
     selling stockholders and the number of shares of common stock issuable upon
     exercise of warrants to purchase  shares of our common stock by the selling
     stockholders.

(2)  Pursuant  to Rule  416 of the  Securities  Act of  1933,  as  amended  (the
     "Securities  Act"),  the shares of common stock offered hereby also include
     such presently  indeterminate  number of shares of common stock as shall be
     issued  by  us  to  the  selling   stockholders   upon   adjustment   under
     anti-dilution  provisions  covering  the  additional  issuance of shares by
     Xybernaut   resulting  from  stock  splits,   stock  dividends  or  similar
     transactions.

(3)  Represents  the number of shares of common stock  issuable upon exercise of
     warrants to purchase shares of our common stock.

(4)  Estimated  solely  for the  purpose of  calculating  the  registration  fee
     pursuant to Rule 457(c) and (g) of the Securities Act; based on the average
     ($2.26) of the closing bid  ($2.25) and asked  ($2.26)  price on the Nasdaq
     Small Cap Market on September 24, 2003.

(5)  Estimated  solely  for the  purpose of  calculating  the  registration  fee
     pursuant to Rule 457(g) of the  Securities  Act, based on the higher of (a)
     the exercise  price of the warrants or (b) the offering price of securities
     of the same class included in this registration statement.

(6)  Calculated  pursuant  to  Section  6(b) of the  Securities  Act based  upon
     Proposed Maximum Aggregate Offering Price multiplied by .00008090.


The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further amendment which specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933 or  until  this  Registration  Statement  shall  become
effective on such date as the  Commission,  acting pursuant to Section 8(a), may
determine.





The  information  in this  prospectus is not complete and may be changed.  These
securities  may not be sold  until the  registration  statement  filed  with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell nor is it seeking an offer to buy these  securities  in any state  where
the offer or sale is not permitted.





                 SUBJECT TO COMPLETION, DATED SEPTEMBER 29, 2003

PROSPECTUS

                              XYBERNAUT CORPORATION

                        13,355,674 shares of common stock

     The selling stockholders of Xybernaut Corporation listed on page 10 of this
prospectus  are  offering  for sale up to  13,355,674  shares of common stock of
Xybernaut under this prospectus.

     The selling  stockholders  may offer their shares through public or private
transactions,  at prevailing market prices, or at privately  negotiated  prices.
See "Plan of Distribution".

          -----------------------------------------------------------
                         NASDAQ Small Cap Market Symbol:
                                     "XYBR"
          -----------------------------------------------------------

     On September  24, 2003,  the closing price of one share of our common stock
on the NASDAQ Small Cap Market was $2.26.



     This  investment  involves  a high  degree of risk.  You  should  carefully
     consider the factors  described under the caption "Risk Factors"  beginning
     on page 2 of this prospectus.

     Neither the  Securities and Exchange  Commission  nor any state  securities
     commission  has approved or disapproved  these  securities or determined if
     this prospectus is truthful or complete. Any representation to the contrary
     is a criminal offense.





                The date of this prospectus is _________ __, 2003



                                  RISK FACTORS

         Before  you buy shares of our  common  stock,  you should be aware that
there are various risks associated with that purchase, including those described
below.  You should consider  carefully these risk factors,  together with all of
the other  information in this prospectus and the documents we have incorporated
by  reference  in the section  "Where You Can Find More  Information  About Us,"
before you decide to purchase shares of our common stock.


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     Risks Associated with Our History of Losses and Future Need for Capital
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We have a history of losses and, if we do not achieve profitability,  we may not
be able to continue our business in the future.

         Our  sales,   marketing,   research,   development   and   general  and
administrative  expenses have resulted in significant losses and are expected to
continue to result in significant  losses for the  foreseeable  future.  We have
incurred the following losses since 1997:


                  Fiscal years ended:
                      o  December 31, 1997                       $(10,051,757)
                      o  December 31, 1998                       $(13,001,338)
                      o  December 31, 1999                       $(16,697,413)
                      o  December 31, 2000                       $(24,185,222)
                      o  December 31, 2001                       $(32,199,579)
                      o  December 31, 2002                       $(26,580,833)

                  Fiscal quarter  ended:
                      o  March 31, 2003                          $(5,378,478)
                      o  June 30, 2003                           $(3,256,866)


We could be required to cut back or stop  operations  if we are unable to reduce
cash operating expenses and obtain needed financing.

         We have  recorded  net losses  since our  inception.  These  losses are
primarily  attributable  to the  operating  expenses  incurred  by us to design,
develop,  market and sell our  mobile  and  wearable  computer  products  and to
provide  general  and  administrative  support for these  operating  activities.
During these periods, our revenues and gross margins have not been sufficient to
fund these operating  activities.  As a result,  we have  consistently  recorded
negative  cash  flows  from  operating  activities  and  net  losses  and had an
accumulated deficit of $139,658,503 at June 30, 2003.

         The   combination   of  our  operating   losses  and  working   capital
requirements has severely impacted our financial position and liquidity. Certain
of our liabilities are past their stated terms of payment,  including those owed
to vendors that provide  services and  inventory  that we require to execute our
business plan. We generally  believe that we have a reasonably good relationship
with most of our  vendors and  creditors.  However  certain of our vendors  have
filed legal actions to recover overdue  accounts  payables and ceased  providing
services and  products to us. We do not believe  that


                                      -2-




these actions will have a material  adverse effect on us however there can be no
assurances that other vendors will not pursue similar actions.

         During 2003 and 2002, we funded our operating and investing  activities
through our financing activities,  which consist primarily of private placements
of common stock, warrant and stock option exercises and borrowings.

         We have taken  steps  that we  believe  are  necessary  to improve  our
operations and raise additional capital, both of which are needed to enhance our
ability to meet our cash flow needs  through  December 31, 2003 and  thereafter.
Beginning  in April  2002,  we have  performed  reviews  of our  operations  and
implemented various cost cutting programs to significantly  reduce our operating
expenses.  Assuming  there are no  significant  changes to our business plan, we
expect to  maintain  savings of over 50% from  annualized  fourth  quarter  2001
levels.  During the fourth quarter of 2002 and the first and second  quarters of
2003, we met our current target to reach a quarterly  operating expense level of
between  $4,000,000 and $5,000,000.  Future  significant  fluctuations may still
occur  as  a  result  of  non-recurring   charges  associated  with  cost-saving
initiatives as well as our research and development activities,  which will vary
depending on  wearable/mobile  computer  product  development  cycles during any
given period.

         We believe that our current  staffing and resources  will be sufficient
to carry out our business plan for the  foreseeable  future.  In addition to the
cost cutting initiatives  already undertaken,  we continue to review all aspects
of our operations and may take additional  actions to reduce operating  expenses
further.

         During the period from January 1, 2003 through the date of this filing,
we  raised  approximately  $22,000,000  through  sales  of our  common  stock to
institutional investors,  through warrant and stock option exercises and through
borrowings,  inclusive  of the  financings  included in this  filing.  Potential
sources of additional  financing  include  private equity  offerings,  strategic
investments,   and  various  forms  of  debt  financing.  We  believe  that  the
combination of cash on hand,  cash flows from  operations,  and outside  funding
will provide sufficient liquidity to meet our ongoing cash requirements. This is
based both on our  historical  ability to raise  capital  and on debt and equity
financings currently available to us. However, there can be no assurance that we
can  or  will  obtain  sufficient  funds  from  operations  or  from  additional
financings  on terms  acceptable  to us. If we are  unable to obtain  sufficient
additional financing, we will be required to cut back or stop operations.

We may face difficulties in obtaining needed financings.

         The equity  markets,  especially  for small  capitalization  technology
stocks, have remained depressed, and the U.S. and world economies have generally
been in a decline or  recession.  If a sustained  decline in the general  equity
markets,  the price of our common  stock,  or the U.S. or world  economy were to
occur, we could face difficulties in our ability to raise additional capital.

         We have  historically  made several  private  placements  of our common
stock per year,  primarily to a limited  number of  institutional  investors who
specialize  in  making  similar  types of  investments.  If these  institutional
investors were to choose to not  participate in future  private  placements,  we
could face difficulties in our ability to raise additional capital.

                                      -3-


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             Risks Associated with the Industry in Which We Operate
- --------------------------------------------------------------------------------


Our future revenues and ability to produce new products depend  substantially on
the success of the Mobile Assistant(R) and AtigoTM series.

         The Mobile  Assistant and Atigo series are our  principal  products and
our success  will depend to a large  extent  upon their  commercial  acceptance,
which  cannot  be  assured.   Additional  product  development  will  result  in
significant  research and development  expenses that may be unrecoverable should
commercialization  of new products prove  unsuccessful.  We also could require a
higher  level of funding if  research  and  development  or sales and  marketing
expenses are greater than we anticipate.  As with most high technology products,
new models must be introduced  periodically for us to remain competitive.  There
can be no  assurance  that  these new models can be  successfully  developed  or
marketed or will be commercially accepted.

We have  significant  commitments  to  purchase  inventory  and  services in the
future.

         We have commitments to purchase  inventory,  tooling and/or engineering
and other services from our suppliers and  manufacturers  related to our current
and future  hardware  product  lines.  We expect that we will enter into similar
commitments  in the future as we design,  develop  and procure  future  wearable
computer product lines.

         In March 2003,  we entered  into an  agreement  with IBM under which we
were  released  of our prior  obligation  to pay a penalty or procure  inventory
other than $4,910,000 in MA V computing units, flat panel displays,  peripherals
and component parts. The final pricing provided to us represents a discount from
the original contractual prices.  Under the March 2003 agreement,  IBM will ship
inventory  monthly  from  March  2003  through  December  2003 and we will remit
payments monthly from March 2003 through January 2004.

         In  addition  to the  obligation  to IBM  related to the MA V described
above,  we have  commitments to purchase  computing  units,  flat panel and head
mounted displays,  miscellaneous computing components as well as engineering and
other services from our various  vendors  related to the MA V, Atigo, MA TC, and
future  product lines.  We believe that, if necessary,  the timing and amount of
many of these  shipments,  services  and  payments  may be adjusted  through the
payment of  cancellation  fees,  contract  negotiations  or the  satisfaction of
obligations through the issuance of our equity securities. However, there can be
no assurance that we can successfully modify these contracts or commitments.

         Excluding the potential impact of contract  modifications,  we estimate
that we will make total payments of approximately  $4,000,000  during the period
from July 2003 through January 2004 related to inventory  commitments as of June
30, 2003,  which amount  includes the commitment to purchase the additional MA V
products  from IBM  discussed  above.  We expect that we will enter into similar
inventory and  engineering  commitments in the future as we design,  develop and
procure future mobile and wearable computer product lines.


                                      -4-


We may have to lower prices or spend more money to effectively  compete  against
companies  with greater  resources than us, which could result in lower revenues
and/or profits.

         The success of our products in the marketplace depends on many factors,
including  product  performance,   price,  ease  of  use,  support  of  industry
standards,  competing technologies and customer support and service. Given these
factors we cannot assure you that we will be able to compete  successfully.  For
example,  if our  competitors  offer lower  prices,  we could be forced to lower
prices  which  could  result in reduced or  negative  margins  and a decrease in
revenues.  If we do not lower  prices we could lose sales and market  share.  In
either  case,  if we are unable to compete  against our main  competitors  which
include established  companies like CDI, ViA Inc., Texas  Microsystems,  Symbol,
Raytheon,  Panasonic  and others,  we would not be able to  generate  sufficient
revenues to grow our company or reverse our history of losses.

         In addition, we may have to spend more money to effectively compete for
market share,  including funds to expand our infrastructure,  which is a capital
and time intensive process.  Further,  if other companies choose to aggressively
compete  against  us, we may have to reduce  our  prices and spend more money on
advertising, promotion, trade shows, product development, marketing and overhead
expenses, hiring and retaining personnel, and developing new technologies. These
lower prices and higher expenses would adversely  affect our operations and cash
flows.

Currency  fluctuations,  especially in the Japanese Yen and European  Euro,  may
significantly increase our expenses and affect our results of operations.

         The exchange  rates for some local  currencies  in  countries  where we
operate may fluctuate in relation to the U.S. dollar. Such fluctuations may have
an adverse effect on our competitive position as well as our expenses, revenues,
earnings,  assets or liabilities  when local currencies are translated into U.S.
dollars.  We have  significant  operations  in Asia, in  particular  Japan,  and
Europe, in particular Germany.  Also, we are party to supplier arrangements with
several  companies in Asia and Europe for the production of the Mobile Assistant
series.  Our  foreign  operations,  including  payments  to our  suppliers,  are
typically funded in the local  currencies.  Any changes in the value of the U.S.
dollar  against  these  currencies  could  result in an increase in our reported
expenses or inventory  costs or a decrease in our reported  revenues  which,  if
substantial, could have a material adverse effect on our financial condition and
results of operations.

If our sales and receivables continue to be concentrated among a small number of
our customers, the loss of a customer, a substantial decrease of sales to one of
our  customers  or a  customer's  inability to pay amounts owed to us may have a
material adverse effect on our sales, operating results and cash flows.

         A  significant  percentage of our sales has been  concentrated  among a
relatively  small number of  customers.  For the fiscal  quarter  ended June 30,
2003,  we had one (1)  customer  which  comprised  more  than  10% of our  total
revenues, representing 45% of total revenues. Additionally, at June 30, 2003, we
had two (2) customers  which each  comprised more than 10% of our total accounts
receivable, representing an aggregate of 65% of total accounts receivable. There
can be no  assurance  that this  concentration  of sales and  receivables  among
customers will not continue in the future. The loss of a significant customer or
a substantial decrease in sales to such a customer would have a material adverse
effect on our sales and operating results.  Our arrangements with certain of our
customers,  especially  those  related  to the  sale  of our  wearable  computer
hardware products, are based on the receipt of purchase orders and otherwise are
not subject to long-term  written contracts and generally may be terminated upon
short  notice.  In  addition,   these  and  other  customers  may  demand


                                      -5-


price concessions from us that could adversely affect profit margins.  Also, our
cash flows may be  adversely  affected if a customer is unable or  unwilling  to
repay amounts owed to us.


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                              Risk Associated with
                      Our Internal Operations and Policies
- --------------------------------------------------------------------------------

Since we do not intend to  declare  dividends  in the  foreseeable  future,  the
return on your investment  will depend upon  appreciation of the market price of
your shares.

         We have never paid any  dividends  on our  common  stock.  Our board of
directors  does not intend to declare any dividends in the  foreseeable  future,
but intends to retain all earnings,  if any, for use in our business operations.
As a  result,  the  return  on  your  investment  in us  will  depend  upon  any
appreciation  in the market  price of our common  stock.  The  holders of common
stock are entitled to receive dividends when, as and if declared by the board of
directors out of funds legally available for dividend  payments.  The payment of
dividends,  if any,  in the  future is  within  the  discretion  of our board of
directors and will depend upon our earnings,  capital requirements and financial
condition, and other relevant factors.

- --------------------------------------------------------------------------------
               Risks Which May Dilute the Value of Your Xybernaut
                Shares or Limit the Effect of Their Voting Power
- --------------------------------------------------------------------------------

The price of our common stock is highly volatile.

         The price of our  common  stock is highly  volatile.  During the period
from  January 1, 2000 to  September  24, 2003 the price of our common  stock has
ranged from a high of $29.97 to a low of $0.19.  Following periods of volatility
in  the  market  price  of  a  company's  securities,  securities  class  action
litigation  has  often  been  instituted  against  such a  company.  If  similar
litigation were instituted  against us, it could result in substantial costs and
a diversion of our  management's  attention and  resources,  which could have an
adverse effect on our business.  The volatile  fluctuations  of the market price
are based on (1) the  number of shares in the  market at the time as well as the
number of shares we may be  required  to issue in the  future,  compared  to the
market demand for our shares;  (2) our performance  and meeting  expectations of
our performance, including the development and commercialization of our products
and proposed  products;  (3) market  conditions for technology  companies in the
small capitalization sector; and (4) general economic and market conditions.

Our executive  officers,  directors and principal  stockholders,  together,  may
exercise control over all matters submitted to a vote of stockholders.

         As of April 24, 2003, our executive  officers,  directors and principal
stockholders  beneficially  owned,  in the  aggregate,  approximately  4% of our
outstanding shares of common stock. These stockholders,  if acting together, may
be  able  to  effectively   control  most  matters  requiring  approval  by  our
stockholders. The voting power of these stockholders under certain circumstances
could  have the  effect  of  delaying  or  preventing  a change  in  control  of
Xybernaut.


                                      -6-


We have recently issued a significant amount of our common stock.

         During the period from January 1, 2003 through  September  24, 2003, we
raised   approximately   $22,000,000  through  sales  of  our  common  stock  to
institutional  investors and through  warrant and stock option  exercises.  As a
result of our financings and other activities, 54,237,609 shares of common stock
were issued during this period, which number includes 9,131,016 shares of common
stock issued and included on this prospectus. This represents a 48% increase in
the number of shares outstanding as compared to the number of shares outstanding
as of January 1, 2003.

We have  18,198,414  shares of our common stock  reserved  for future  issuances
which can substantially dilute the value of your Xybernaut common stock.

         The issuance of reserved  shares  would  dilute the equity  interest of
existing  stockholders and could have a significant adverse effect on the market
price of our common stock. As of September 24, 2003 we had 18,198,414  shares of
common stock reserved for possible  future  issuances upon conversion of options
and warrants, which number includes 4,224,658 shares of common stock reserved in
connection with shares underlying  warrants  included on this prospectus.  These
options and warrants are  convertible  into or exercisable  for shares of common
stock at prices that may  represent  discounts  from future market prices of the
common  stock.  The  exercise  of these  options  or  warrants  could  result in
substantial dilution to existing holders of common stock. The sale of the common
stock acquired at a discount  could have a negative  impact on the trading price
of the common stock and could  increase the  volatility  in the trading price of
the common  stock.  See the  section  entitled  "Dilution"  for a summary of the
number of  shares  which  could be issued  upon  conversion  of the  outstanding
preferred stock at various market prices.

         In addition,  we may seek additional  financing which may result in the
issuance of  additional  shares of our capital  stock  and/or  rights to acquire
additional  shares of our capital stock.  Those additional  issuances of capital
would result in a reduction of your percentage interest in Xybernaut.

Anti-takeover  measures in our  certificate  of  incorporation  could  adversely
affect the voting power of the holders of the common stock.

         Our certificate of incorporation authorizes anti-takeover measures such
as the authority to issue "blank check"  preferred stock and the staggered terms
of the members of our board of directors.  Those  measures could have the effect
of delaying,  deterring or preventing a change in control  without any action by
our stockholders.  In addition, issuance of preferred stock, without stockholder
approval,  on  those  terms as the  board  of  directors  may  determine,  could
adversely affect the voting power of the holders of the common stock,  including
the loss of voting control to others.

                INFORMATION REGARDING FORWARD-LOOKING STATEMENTS

         This  prospectus  contains  certain  forward-looking  statements  which
involve substantial risks and uncertainties.  These  forward-looking  statements
can generally be identified  because the context of the statement includes words
such as "may," "will," "except," "anticipate," "intend," "estimate," "continue,"
"believe,"  or other  similar  words.  Similarly,  statements  that describe our
future plans,  objectives  and goals are also  forward-looking  statements.  Our
factual results,  performance or achievements could differ materially from those
expressed or implied in these forward-looking  statements as a result of certain
factors,  including  those  listed  in  "Risk  Factors"  and  elsewhere  in this
prospectus.

                                      -7-


                  WHERE YOU CAN FIND MORE INFORMATION ABOUT US

         We file annual,  quarterly and special  reports,  proxy  statements and
other information with the Securities and Exchange  Commission (the "SEC").  You
may read and copy any  document we file at the SEC's public  reference  rooms in
Washington,  D.C., New York, New York and Chicago, Illinois. Please call the SEC
at 1-800-SEC-0330 for further information on the public reference rooms. Our SEC
filings are also  available to the public over the Internet at the SEC's Website
at "http://www.sec.gov."

         We have  filed  with the SEC a  registration  statement  on Form S-3 to
register the shares being offered.  This prospectus is part of that registration
statement  and,  as  permitted  by the SEC's  rules,  does not  contain  all the
information included in the registration statement. For further information with
respect  to us and our  common  stock,  you  should  refer  to the  registration
statement  and to the exhibits and schedules  filed as part of the  registration
statement, as well as the documents discussed below.

         The SEC allows us to "incorporate by reference" the information we file
with them,  which means that we can  disclose  important  information  to you by
referring you to those documents.  The information  incorporated by reference is
an important part of this  prospectus,  and information  that we file later with
the SEC will automatically update or supersede this information.

         This prospectus may contain  summaries of contracts or other documents.
Because they are summaries,  they will not contain all of the  information  that
may be important to you. If you would like complete information about a contract
or  other  document,  you  should  read  the copy  filed  as an  exhibit  to the
registration   statement  or  incorporated  in  the  registration  statement  by
reference.

         We incorporate  by reference the documents  listed below and any future
filings we will make with the SEC under Sections  13(a),  13(c),  14 or 15(d) of
the Securities  Exchange Act of 1934 (File No.  0-19041) until all of the shares
are sold:

         o        Quarterly  Report on Form 10-Q for the  fiscal  quarter  ended
                  June 30, 2003 filed with the SEC on August 13, 2003;

         o        Quarterly  Report on Form 10-Q for the  fiscal  quarter  ended
                  March 31, 2003 filed with the SEC on May 15, 2003;

         o        Annual  Report  on Form  10-K/A  for  the  fiscal  year  ended
                  December 31, 2002 filed with the SEC on April 30, 2003;

         o        Annual Report on Form 10-K for the fiscal year ended  December
                  31, 2002 filed with the SEC on March 28, 2003; and

         o        The   description  of  our  common  stock   contained  in  the
                  registration  statement  on Form 8-A  filed  on July 15,  1996
                  under  the  Exchange  Act (File No.  0-15086),  including  all
                  amendments  or reports  filed for the purpose of updating that
                  description.

         You may request a copy of these  filings,  at no cost, by writing to us
at 12701 Fair Lakes Circle, Suite 550, Fairfax,  Virginia 22033, (703) 631-6925,
Attention: Thomas D. Davis or by e-mail at investorrelations@xybernaut.com.

                                      -8-


         You can review and copy the  registration  statement,  its exhibits and
schedules,  as well as the  documents  listed  below,  at the  public  reference
facilities maintained by the SEC as described above. The registration statement,
including its exhibits and schedules, are also available on the SEC's web site.

                                 USE OF PROCEEDS

         The selling  stockholders are selling all of the shares covered by this
prospectus for their own accounts. Accordingly, we will not receive any proceeds
from the resale of the shares.

         We will receive  proceeds,  if any,  from the exercise of warrants.  We
will use those  proceeds,  if any,  for working  capital  and general  corporate
purposes.

         We will bear the  expenses  relating to this  registration,  other than
discounts and commissions, which will be paid by the selling stockholders.

                                    DILUTION

         As of  September  24,  2003 we had issued and  outstanding  167,853,331
shares of common stock. At that date, there were an additional 18,198,414 shares
of common stock reserved for possible future issuances as follows:

         o        options to  purchase  6,472,365  shares at an  exercise  price
                  between  $0.24 and $23.38 per share.  We have  registered  the
                  shares  issuable  upon  exercise  of  the  options  under  the
                  Securities Act;

         o        warrants to purchase 8,287,397 shares at a price between $0.50
                  and  $5.00  per  share.  Of  the  8,287,397  shares,  we  have
                  previously  registered  a total of 3,942,739  shares  issuable
                  upon exercise of these  warrants.  This  prospectus  covers an
                  additional  4,224,658  shares of common  stock  issuable  upon
                  exercise of  warrants,  which  shares will be freely  tradable
                  without   restriction    (subject   to   prospectus   delivery
                  requirements)  on  the  effective  date  of  the  registration
                  statement.  The remaining  120,000 shares will be deemed to be
                  "restricted securities" when issued; and

         o        3,438,652  shares  issuable upon exercise of options under the
                  Company's stock incentive plans which have not been granted as
                  of September 24, 2003. We have  registered the shares issuable
                  upon exercise of the options.

         The shares  which will be deemed  "restricted  securities"  may be sold
under Rule 144. Rule 144 permits sales of "restricted securities" by any person,
whether or not an affiliate of the issuer,  after a one year holding period.  At
that time, sales can be made subject to the Rule's volume and other  limitations
and after two years by  non-affiliates  without adhering to Rule 144's volume or
other  limitations.  In general,  an  "affiliate"  is a person with the power to
manage and direct our policies.  The SEC has stated that,  generally,  executive
officers and directors of an entity are deemed affiliates of the issuing entity.

                                      -9-


                              SELLING STOCKHOLDERS

         This prospectus covers the resale by the selling  stockholders of up to
13,355,674 shares of our common stock.

         The natural person holding voting and/or  dispositive  control over the
shares  owned  by  Chesterfield  Inc.  is Mr.  Michael  Cohen.  The  address  of
Chesterfield Inc. is 11 Lamed Hae Street, Givatayim, Israel.

         The natural person holding voting and/or  dispositive  control over the
shares owned by Essex  Trading  Ltd. is Mr.  Ralph  Inbar.  The address of Essex
Trading Ltd. is Fitzroy Mews 5, Suite No. 7, London, England.

         The natural person holding voting and/or  dispositive  control over the
shares owned by Sundial Investments, Limited is Ms. Beverly Simmons. The address
of Sundial  Investments,  Limited is Gretton  House,  P.O.  Box 65, Duke Street,
Grand Turk, Turks & Caicos Islands, British West Indies.

         The  following  table  lists  the  selling   stockholders  and  certain
information  regarding the ownership by such selling  stockholders  of shares of
our common stock as of September  24, 2003,  and as adjusted to reflect the sale
of the shares. Information concerning the selling stockholders,  their pledgees,
donees and other non-sale  transferees who may become selling  stockholders  may
change from time to time. To the extent the selling stockholders or any of their
representatives  advise us of such  changes,  we will report those  changes in a
prospectus supplement to the extent required. See "Plan of Distribution."

         The  registration  of the following  shares  through this  registration
statement  allows the selling  stockholders  to sell their share holdings in the
future on the open market and is not necessarily an indication of intent to sell
the shares.



                                                                        Percentage                      Shares of Common
                                                                        of Common                          Stock Owned
                                                   Shares of Common    Stock Owned       Shares of    After Offering (2)(3)
                                                 Stock Owned Prior to    Prior to     Common Stock    ---------------------
                                                     Offering (1)      the Offering    to be Sold(2)    Number    Percent
                                                     ------------      ------------    -------------    ------    -------
                                                                                                       
Chesterfield Inc.                                    10,273,973(4)         6.1%         10,273,973(4)        0          0%
Essex Trading Ltd.                                    2,400,000(5)         1.4%          2,400,000(5)        0          0%
Sundial Investments, Limited                            681,701             *              681,701           0          0%


- --------------
* Less than 1%

(1)      Includes  shares of common  stock and  warrants to  purchase  shares of
         common stock included on this registration statement.

(2)      Assumes  that  the  selling  stockholders  will  exercise  all of their
         warrants into shares of common stock.


(3)      Assumes  all of the  securities  offered  hereby  will  be  sold by the
         selling stockholders.

(4)      Includes  3,424,658  shares of common stock  issuable  upon exercise of
         warrants.

(5)      Includes  800,000  shares of common  stock  issuable  upon  exercise of
         warrants.


                                      -10-


         The common  stock has the  material  rights and  obligations  discussed
below and under the section entitled  "Description of Securities." We have filed
the agreements  relating to these rights and  obligations  with the SEC. We urge
you to read them in their entirety.

         Chesterfield  Inc.  acquired  its  shares of common  stock in a private
placement  transaction entered into on September 8, 2003. Under the terms of the
common stock and warrant purchase agreement between Chesterfield Inc. and us, we
agreed  to sell  6,849,315  shares of our  common  stock at a price of $0.73 per
share,  representing  an  approximate  20% discount to the closing  price of our
common  stock  for the  trading  day on the  date of the  agreement,  for  gross
proceeds of $5,000,000.  We also issued warrants to purchase 3,424,658 shares of
our common stock exercisable at the following  exercise prices: (i) if exercised
at any time from the date of issuance of the warrants through September 8, 2004,
the exercise price shall be equal to $0.91 per share, which was the market price
of the  common  stock on the date the  transaction  was  entered  into,  (ii) if
exercised at any time from September 9, 2004 through and including  September 8,
2005,  the  exercise  price  shall be equal to 200% of the  market  price of the
common  stock  on the  date the  transaction  was  entered  into,  and  (iii) if
exercised at any time from September 9, 2005 through and including  September 8,
2006,  the  exercise  price  shall be equal to 300% of the  market  price of the
common stock on the date the  transaction  was entered into.  These warrants are
exercisable for a period of 3 years from the date of issuance. We may call up to
100% of the these warrants if our common stock price is equal to or greater than
$3.00 per share for 5  consecutive  trading  days prior to the date that we call
the warrants. In connection with our sale of common stock pursuant to the common
stock and warrant  purchase  agreement,  we entered into a  registration  rights
agreement  pursuant  to which,  among  other  things,  we agreed to use our best
efforts to file a  registration  statement  to register for resale the shares of
common stock, including the shares of common stock issuable upon exercise of the
warrants,  no  later  than 30  days  after  the  closing  date  and  cause  such
registration  statement  to become  effective as promptly as  practicable  after
filing but no later than December 8, 2003.

         Essex  Trading  Ltd.  acquired  its shares of common stock in a private
placement transaction entered into on September 16, 2003. Under the terms of the
common stock and warrant purchase  agreement  between Essex Trading Ltd. and us,
we agreed to sell  1,600,000  shares of our common stock at a price of $1.25 per
share,  representing  an  approximate  18% discount to the closing  price of our
common  stock  for the  trading  day on the  date of the  agreement,  for  gross
proceeds of $2,000,000.  We also issued  warrants to purchase  800,000 shares of
our common stock exercisable at the following  exercise prices: (i) if exercised
at any time from the date of  issuance of the  warrants  through  September  16,
2004, the exercise price shall be equal to $1.53 per share, which was the market
price of the common stock on the date the  transaction was entered into, (ii) if
exercised at any time from  September 17, 2004 through and  including  September
16, 2005,  the exercise  price shall be equal to 200% of the market price of the
common  stock  on the  date the  transaction  was  entered  into,  and  (iii) if
exercised at any time from  September 17, 2005 through and  including  September
16, 2006,  the exercise  price shall be equal to 300% of the market price of the
common stock on the date the  transaction  was entered into.  These warrants are
exercisable for a period of 3 years from the date of issuance. We may call up to
100% of the these warrants if our common stock price is equal to or greater than
$3.00 per share for 5  consecutive  trading  days prior to the date that we call
the warrants. In connection with our sale of common stock pursuant to the common
stock and warrant  purchase  agreement,  we entered into a  registration  rights
agreement  pursuant  to which,  among  other  things,  we agreed to use our best
efforts to file a  registration  statement  to register for resale the shares of
common stock, including the shares of common stock issuable upon exercise of the
warrants,  no  later  than 30  days  after  the  closing  date  and  cause  such
registration  statement  to become  effective as promptly as  practicable  after
filing but no later than December 16, 2003.

                                      -11-


         Sundial Investments,  Limited entered into a financing transaction with
us on March 26,  2003  whereby we  borrowed  $1,750,000  pursuant  to a one-year
promissory note issued to Sundial  Investments,  Limited that bore interest at a
rate of 3.5% per annum.  On May 30,  2003,  the  Company  repaid  the  remaining
principal and interest on the note in the aggregate  amount of $252,229  through
the issuance to Sundial  Investments,  Limited of an aggregate of 681,701 shares
of our common  stock at an agreed  upon  valuation  of $.37 cents per share.  In
connection  with our  issuance of common  stock  pursuant to our  agreement,  we
agreed to include the shares of common stock on a registration  statement  filed
by us.

         All of the warrants  have  adjustment  provisions  for dilution  events
including stock splits, stock dividends and similar transactions.

         Other  than the  transactions  disclosed  above  pursuant  to which the
selling stockholders received the securities being registered for resale on this
prospectus, the selling stockholders are not affiliated with us and have not had
any material relationship with us or our affiliates during the past three years.


                            DESCRIPTION OF SECURITIES

General

         Our authorized  capital stock consists of 200,000,000  shares of common
stock,  par value $0.01 per share,  and 6,000,000 shares of preferred stock, par
value $0.01 per share. As of September 24, 2003, we have  167,853,331  shares of
common stock  issued and  outstanding.  We have  reserved  18,198,414  shares of
common stock for issuance upon exercise of options and warrants.

Common Stock

Voting

         The holders of our common stock are entitled to one vote for each share
held  of  record  on all  matters  submitted  to a  vote  of  stockholders.  Our
certificate of  incorporation  and by-laws do not provide for cumulative  voting
rights in the election of directors.  Accordingly,  holders of a majority of the
shares of common stock  entitled to vote in any election of directors  may elect
all of the directors standing for election.

Dividends

         Holders of common stock are entitled to receive ratably those dividends
as may be declared by our board of directors out of funds legally  available for
that purpose.

Rights on Liquidation

         In the event of our liquidation,  dissolution or winding up, holders of
common stock are entitled to share ratably in the assets remaining after payment
of liabilities.

                                      -12-


Pre-emptive or Redemption Rights

         Holders of common stock have no  preemptive,  conversion  or redemption
rights.  All of the  outstanding  shares of  common  stock  are  fully-paid  and
nonassessable.

Preferred Stock

         Our  board of  directors  has the  authority  to issue up to  6,000,000
shares of preferred stock from time to time in one or more series. Our board has
the  authority to establish  the number of shares to be included in each series,
and to fix the  designations,  powers,  preferences  and rights of the shares of
each series and the applicable qualifications,  limitations or restrictions. The
issuance of  preferred  stock may have the effect of delaying  or  preventing  a
change in control.  The issuance of preferred stock could decrease the amount of
earnings and assets  available for  distribution to the holders of common stock,
if any,  or could  adversely  affect  the rights and  powers,  including  voting
rights,  of the  holders of the common  stock.  In  certain  circumstances,  the
issuances  could have the effect of  decreasing  the market  price of the common
stock.

         As of the date of this prospectus, we have not designated any shares of
preferred stock other than the series A, B, C, D and E preferred  stock,  all of
which have been fully converted into common stock.

Anti-takeover Considerations

         Our  certificate  of  incorporation  authorizes  the  issuance of up to
6,000,000  shares of $0.01 par value preferred  stock. The issuance of preferred
stock  with  such  rights   could  have  the  effect  of  limiting   stockholder
participation in certain transactions such as mergers or tender offers and could
discourage or prevent a change in our management.  We have no present  intention
to issue any additional preferred stock.

         We have a classified  or staggered  board of directors  which limits an
outsider's  ability  to  effect a rapid  change  of  control  of our  board.  In
addition, at the 1998 Annual Meeting of Stockholders held on September 24, 1998,
our stockholders approved measures to amend our certificate of incorporation and
by-laws, where applicable, to:

         o        implement an advance  notice  procedure for the  submission of
                  director  nominations  and other  business to be considered at
                  annual meetings of stockholders;

         o        permit only the President, the Vice Chairman of our board, the
                  Secretary or our board of  directors to call special  meetings
                  of  stockholders  and to limit the  business  permitted  to be
                  conducted at such  meetings to be brought  before the meetings
                  by or at the direction of our board;

         o        provide  that a member of our board of  directors  may only be
                  removed  for cause by an  affirmative  vote of  holders  of at
                  least 66 2/3% of the  voting  power  of the  then  outstanding
                  shares entitled to vote generally in the election of directors
                  voting together as a single class;

         o        fix the size of our board of  directors at a maximum of twelve
                  directors, with the authorized number of directors set at ten,
                  and our board of directors having the sole power and authority
                  to increase or decrease the number of  directors  acting by an

                                      -13-



                  affirmative vote of at least a majority of the total number of
                  authorized  directors  most  recently  fixed  by our  board of
                  directors;

         o        provide  that any  vacancy  on the board may be filled for the
                  unexpired  term (or for a new term in the case of an  increase
                  in the size of the board)  only by an  affirmative  vote of at
                  least a majority  of the  remaining  directors  then in office
                  even if less than a quorum, or by the sole remaining director;

         o        eliminate stockholder action by written consent;

         o        require the approval of holders of 80% of the then outstanding
                  voting stock  and/or the approval of 66 2/3% of the  directors
                  for certain corporate transactions; and

         o        require an affirmative  vote of 66 2/3% of the voting stock in
                  order  to  amend  or  repeal  any  adopted  amendments  to the
                  certificate  of  incorporation   and  bylaws  adopted  at  the
                  meeting.

         Those  measures  combined with the ability of our board of directors to
issue "blank check"  preferred  stock and the staggered  terms of the members of
our  board of  directors,  could  have the  effect  of  delaying,  deterring  or
preventing a change in control  without any further action by the  stockholders.
In addition,  the issuance of preferred stock, without stockholder  approval, on
such terms as our board may determine,  could adversely  affect the voting power
of the  holders of the common  stock,  including  the loss of voting  control to
others.

Transfer Agent and Registrar

         Continental  Stock  Transfer & Trust Company is our Transfer  Agent and
Registrar for our common stock.

                              PLAN OF DISTRIBUTION

         The selling  stockholders and their pledgees,  donees,  transferees and
other subsequent  owners, may offer their shares at various times in one or more
of the following transactions:

         o        on any U.S.  securities exchange on which our common stock may
                  be listed at the time of sale;
         o        in the over-the-counter market;
         o        in privately negotiated transactions;
         o        in connection with short sales; or
         o        in a combination of any of the above transactions.

         The  selling  stockholders  may offer their  shares of common  stock at
prevailing  market  prices  at the  time of sale,  at  prices  related  to those
prevailing market prices, at negotiated prices or at fixed prices.

         The  selling  stockholders  may also  sell the  shares  under  Rule 144
instead of under this prospectus, if Rule 144 is available for those sales.

         The  transactions  in the  shares  covered  by this  prospectus  may be
effected by one or more of the following methods:


                                      -14-


         o        ordinary brokerage  transactions and transactions in which the
                  broker solicits purchasers;

         o        purchases by a broker or dealer as  principal,  and the resale
                  by  that  broker  or  dealer  for  its   account   under  this
                  prospectus, including resale to another broker or dealer;

         o        block  trades in which the  broker or dealer  will  attempt to
                  sell the shares as agent but may position and resell a portion
                  of  the  block  as  principal  in  order  to  facilitate   the
                  transaction; or

         o        negotiated  transactions  between the selling stockholders and
                  purchasers without a broker or dealer.

         The selling stockholders and any broker-dealers or other persons acting
on the behalf of parties that  participate in the distribution of the shares may
be deemed to be  underwriters.  Any  commissions  or profits they receive on the
resale of the shares may be deemed to be underwriting  discounts and commissions
under the Securities Act.

         As of the date of this  prospectus,  we are not aware of any agreement,
arrangement  or  understanding  between  any  broker or dealer  and the  selling
stockholders  with  respect  to the  offer  or sale  of the  shares  under  this
prospectus.

         We have advised the selling  stockholders that during the time they are
engaged in distributing shares covered by this prospectus, they must comply with
the requirements of the Securities Act and Rule 10b-5 and Regulation M under the
Exchange Act. Under those rules and regulations, they:

         o        may not engage in any  stabilization  activity  in  connection
                  with our securities;
         o        must furnish each broker which offers  common stock covered by
                  this  prospectus  with the number of copies of this prospectus
                  which are required by each broker; and
         o        may not bid for or purchase any of our  securities  or attempt
                  to induce any person to purchase any of our  securities  other
                  than as permitted under the Exchange Act.

                 INDEMNIFICATION FOR SECURITIES ACT LIABILITIES

         Section 145 of the Delaware General Corporation Law allows a company to
indemnify its  directors and officers  against  expenses,  judgments,  fines and
amounts paid in settlement under the conditions and limitations described in the
law. Our certificate of  incorporation  authorizes us to indemnify our officers,
directors and other agents to the fullest extent permitted under Delaware law.

         Our  certificate  of  incorporation  provides  that a  director  is not
personally  liable for monetary  damages to us or our stockholders for breach of
his or her fiduciary duties as a director.  A director will be held liable for a
breach  of his or her  duty of  loyalty  to us or our  stockholders,  his or her
intentional  misconduct or willful violation of law, actions or inactions not in
good faith,  an unlawful  stock purchase or payment of a dividend under Delaware
law,  or  transactions  from which the  director  derives an  improper  personal
benefit.  This  limitation  of  liability  does not affect the  availability  of
equitable  remedies  against  the  director   including   injunctive  relief  or
rescission.

         We have purchased a directors and officers  liability and reimbursement
insurance  policy that covers  liabilities of our directors and officers arising
out of claims based upon acts or omissions in their  capacities as directors and
officers.

                                      -15-


        Insofar as indemnification  for liabilities arising under the Securities
Act may be permitted to our directors, officers and controlling persons pursuant
to the  foregoing  provisions,  or  otherwise,  we have been advised that in the
opinion of the SEC such indemnification is against public policy as expressed in
the Securities Act and is, therefore, unenforceable.

                                  LEGAL MATTERS

        Jenkens & Gilchrist Parker Chapin LLP, New York, New York, a stockholder
of our company,  will pass upon the validity of the securities  offered  hereby.
Martin Eric Weisberg,  Esq., a member of the firm, is our Secretary,  one of our
Directors, and a stockholder in our company.

                                     EXPERTS

        The financial statements incorporated in this prospectus by reference to
the Annual  Report on Form 10-K and Form 10-K/A for the year ended  December 31,
2002, have been so incorporated in reliance on the report of Grant Thornton LLP,
independent certified public accountants, given on the authority of said firm as
experts in auditing and accounting.


                                      -16-



========================================  ======================================

We  have  not   authorized  any  dealer,
salesperson  or any other person to give
any information or to represent anything
other  than  those   contained  in  this
prospectus in connection  with the offer
contained herein, and, if given or made,
you    should   not   rely   upon   such
information or representations as having
been     authorized     by     Xybernaut               13,355,674
Corporation.  This  prospectus  does not         SHARES OF COMMON STOCK
constitute  an offer  of any  securities
other  than those to which it relates or
an offer to sell, or a  solicitation  of
an  offer  to buy,  those  to  which  it
relates  in any  state to any  person to
whom it is not lawful to make such offer
in  such  state.  The  delivery  of this
prospectus  at any time  does not  imply
that the  information  herein is correct          XYBERNAUT CORPORATION
as of any  time  after  the date of this
prospectus.



           TABLE OF CONTENTS

                                        Page

Risk Factors..............................2
Information Regarding Forward-Looking
        Statements .......................7
Where You Can Find More
        Information About Us..............8
Use of Proceeds...........................9
Dilution..................................9
Selling Stockholders ....................10       -------------------------
Description of Securities................12              PROSEPECTUS
Plan of Distribution ....................14       -------------------------
Indemnification for Securities
        Act Liabilities..................15
Legal Matters............................16
Experts .................................16       ____________________, 2003


========================================  ======================================



                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

              ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

         The following table sets forth the various  expenses which will be paid
by us in connection with the issuance and  distribution of the securities  being
registered on this  registration  statement.  The selling  stockholders will not
incur any of the expenses set forth below. All amounts shown are estimates.


        Filing fee for registration statement.............$ 2,020.60
        Legal fees and expenses ..........................$10,000.00
        Accounting expenses...............................$ 5,000.00
                                                          ----------
        Total.............................................$17,020.60


         ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         Section  145 of the  General  Corporation  Law of the State of Delaware
(the "DGCL") provides,  in general,  that a corporation  incorporated  under the
laws of the State of Delaware, such as the registrant,  may indemnify any person
who was or is a party or is  threatened  to be made a party  to any  threatened,
pending or completed action,  suit or proceeding (other than a derivative action
by or in the right of the corporation) by reason of the fact that such person is
or was a director,  officer, employee or agent of the corporation,  or is or was
serving at the request of the  corporation as a director,  officer,  employee or
agent of another  enterprise,  against  expenses  (including  attorneys'  fees),
judgments, fines and amounts paid in settlement actually and reasonably incurred
by such person in connection with such action, suit or proceeding if such person
acted in good faith and in a manner such person reasonably  believed to be in or
not opposed to the best interests of the  corporation,  and, with respect to any
criminal action or proceeding,  had no reasonable cause to believe such person's
conduct was unlawful. In the case of a derivative action, a Delaware corporation
may indemnify  any such person  against  expenses  (including  attorneys'  fees)
actually and reasonably  incurred by such person in connection  with the defense
or settlement of such action or suit if such person acted in good faith and in a
manner  such  person  reasonably  believed  to be in or not  opposed to the best
interests of the  corporation,  except that no  indemnification  will be made in
respect of any claim,  issue or matter as to which  such  person  will have been
adjudged to be liable to the corporation  unless and only to the extent that the
Court of  Chancery  of the State of  Delaware  or any other  court in which such
action was brought  determines such person is fairly and reasonably  entitled to
indemnity for such expenses.

         Our  certificate of  incorporation  provides that directors will not be
personally  liable for monetary  damages to us or our stockholders for breach of
fiduciary  duty as a director,  except for liability  resulting from a breach of
the director's duty of loyalty to us or our stockholders, intentional misconduct
or willful violation of law, actions or inactions not in good faith, an unlawful
stock purchase or payment of a dividend under Delaware law, or transactions from
which the  director  derives  improper  personal  benefit.  Such  limitation  of
liability  does not  affect  the  availability  of  equitable  remedies  such as
injunctive  relief  or  rescission.   Our  certificate  of  incorporation   also
authorizes us to indemnify our officers,  directors and other agents, by bylaws,
agreements or



otherwise,  to the fullest extent  permitted under Delaware law. We have entered
into an indemnification  agreement with each of our directors and officers which
may, in some cases,  be broader  than the  specific  indemnification  provisions
contained in our certificate of  incorporation  or as otherwise  permitted under
Delaware law. Each indemnification agreement may require us, among other things,
to indemnify such officers and directors  against certain  liabilities  that may
arise by reason of their  status or service as a director  or  officer,  against
liabilities  arising from willful misconduct of a culpable nature, and to obtain
directors' and officers' liability insurance if available on reasonable terms.

         We maintain  directors and officers  liability  policies that contain a
combined limit of liability of $12,500,000 per policy year.


ITEM 16.  EXHIBITS.

NUMBER            DESCRIPTION OF EXHIBIT

4.1      Form of Warrant issued to Chesterfield Inc.
4.2      Form of  Common  Stock  and  Warrant  Purchase  Agreement,  dated as of
         September 8, 2003, between Chesterfield Inc. and Xybernaut Corporation.
4.3      Form of Registration Rights Agreement,  dated as of September 16, 2003,
         between Chesterfield Inc. and Xybernaut Corporation.
4.4      Form of Warrant issued to Essex Trading Ltd.
4.5      Form of  Common  Stock  and  Warrant  Purchase  Agreement,  dated as of
         September   16,  2003,   between   Essex  Trading  Ltd.  and  Xybernaut
         Corporation.
4.6      Form of Registration Rights Agreement,  dated as of September 16, 2003,
         between Essex Trading Ltd. and Xybernaut Corporation.
4.7      Letter Agreement, dated as of May 30, 2003, between Sundial Investments
         Limited and Xybernaut Corporation.
5.1      Opinion of Jenkens & Gilchrist Parker Chapin LLP.
23.1     Consent of Grant Thornton LLP.
23.2     Consent of Jenkens & Gilchrist  Parker  Chapin LLP  (included  in their
         opinion filed as Exhibit 5.1).


ITEM 17.  UNDERTAKINGS.

         The undersigned registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement;

                  (i) To include any prospectus  required by Section 10(a)(3) of
the Securities Act of 1933;

                  (ii) To reflect in the  prospectus any facts or events arising
         after the  effective  date of the  registration  statement (or the most
         recent post-effective amendment thereof) which,  individually or in the
         aggregate,  represent a fundamental change in the information set forth



         in the  registration  statement.  Notwithstanding  the  foregoing,  any
         increase  or  decrease  in volume of  securities  offered (if the total
         dollar  value of  securities  offered  would not exceed  that which was
         registered) and any deviation from the low or high and of the estimated
         maximum offering range may be reflected in the form of prospectus filed
         with the Securities and Exchange Commission pursuant to Rule 424(b) if,
         in the  aggregate,  the changes in volume and price  represent  no more
         than 20 percent  change in the  maximum  aggregate  offering  price set
         forth in the  "Calculation of Registration  Fee" table in the effective
         registration statement.

                  (iii) To include any material  information with respect to the
         plan of  distribution  not  previously  disclosed  in the  registration
         statement  or  any  material   change  to  such   information   in  the
         registration statement;

         (2) That,  for the  purpose  of  determining  any  liability  under the
Securities Act of 1933, each such post-effective  amendment will be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such  securities  at that time will be deemed to be the initial bona
fide offering thereof.

         (3) To remove from registration by means of a post-effective  amendment
any of the securities being registered which remain unsold at the termination of
the offering.

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors,  officers and controlling  persons of
the  registrant  pursuant  to  the  foregoing  provisions,   or  otherwise,  the
registrant  has been advised that in the opinion of the  Securities and Exchange
Commission  such  indemnification  is against  public policy as expressed in the
Securities Act and is, therefore, unenforceable.

         In the event that a claim for indemnification  against such liabilities
(other than the  payment by the  registrant  of  expenses  incurred or paid by a
director,  officer or  controlling  person of the  registrant in the  successful
defense of any action, suit or proceeding) is asserted by such director, officer
or controlling  person in connection with the securities being  registered,  the
registrant  will,  unless in the  opinion  of its  counsel  the  matter has been
settled by controlling precedent,  submit to a court of appropriate jurisdiction
the question  whether such  indemnification  by it is against  public  policy as
expressed in the Securities  Act and will be governed by the final  adjudication
of the issue.

         The  undersigned  registrant  hereby  undertakes  that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual  report  pursuant to section  13(a) or section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
registration  statement  will  be  deemed  to  be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time will be deemed to be the initial bona fide offering thereof.



                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-3 and has duly caused this registration
statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized,  in the City of Fairfax,  Commonwealth  of Virginia on September 26,
2003.

                                     XYBERNAUT CORPORATION


                                     By: /s/  Edward G. Newman
                                         ---------------------------------------
                                              Edward G. Newman
                                              Chief Executive Officer and
                                              Chairman of the Board of Directors


                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS,  that each  individual  whose signature
appears  below  constitutes  Edward G. Newman and Steven A. Newman,  each acting
alone,  his true and  lawful  attorney-in-fact  and  agent,  with full  power of
substitution  and  resubstitution,  for him and in his name, place and stead, in
any and all  capacities,  to sign any and all amendments to this Form S-3 and to
file the same with exhibits thereto, and all documents in connection  therewith,
with   the   Securities   and   Exchange   Commission,    granting   unto   said
attorneys-in-fact  and agents,  and each of them, full power and authority to do
and perform each and every act and thing  requisite  and necessary to be done in
and about the  premises,  as fully to all  intents  and  purposes as he might or
could  do  in  person,   hereby   ratifying   and   confirming   all  that  said
attorneys-in-fact  and  agents  or any of them,  or their  or is  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
registration  statement  on Form S-3 has  been  signed  below  by the  following
persons in the capacities indicated on September 26, 2003.



                 Signature                                            Title
                                           


/s/ Edward G. Newman                          Chief Executive Officer and Chairman of the Board of
- ---------------------------                   Directors
Edward G. Newman


/s/ Steven A. Newman                          President, Chief Operating Officer and Vice Chairman
- ------------------------------------          of the Board of Directors
Steven A. Newman, M.D.


/s/ Thomas D. Davis                           Senior Vice President and Chief Financial Officer
- ------------------------------------
Thomas D. Davis


/s/ Kazuyuki Toyosato                         Executive Vice President and Director
- ------------------------------------
Kazuyuki Toyosato





                 Signature                                            Title
                                           


/s/ Eugene J. Amobi                           Vice President and Director
- ------------------------------------
Eugene J. Amobi


/s/ Martin Eric Weisberg                      Secretary and Director
- ---------------------------
Martin Eric Weisberg, Esq.


                                              Director
- ------------------------------------
James S. Gilmore III, Esq.


                                              Director
- ------------------------------------
Marc Ginsberg


/s/ Phillip E. Pearce                         Director
- ------------------------------------
Phillip E. Pearce


/s/ James J. Ralabate                         Director
- ------------------------------------
James J. Ralabate


/s/ Lt. Gen. Harry E. Soyster                 Director
- ------------------------------------
Lt. Gen. Harry E. Soyster


/s/ Dr. Edwin  Vogt                           Director
- ------------------------------------
Dr. Edwin Vogt


                                              Director
- ------------------------------------
Noritsugu Yamaoka





                                 SECURITIES AND
                                    EXCHANGE
                                   COMMISSION

                             WASHINGTON, D.C. 20549


                                  -------------




                                   EXHIBITS TO

                                    FORM S-3

                             REGISTRATION STATEMENT

                                      UNDER

                           THE SECURITIES ACT OF 1933


                                  -------------







                              XYBERNAUT CORPORATION
                       (EXACT NAME OF ISSUER AS SPECIFIED
                                 IN ITS CHARTER)



                               September 26, 2003







NUMBER            DESCRIPTION OF EXHIBIT


4.1      Form of Warrant issued to Chesterfield Inc.
4.2      Form of  Common  Stock  and  Warrant  Purchase  Agreement,  dated as of
         September 8, 2003, between Chesterfield Inc. and Xybernaut Corporation.
4.3      Form of Registration  Rights Agreement,  dated as of September 8, 2003,
         between Chesterfield Inc. and Xybernaut Corporation.
4.4      Form of Warrant issued to Essex Trading Ltd.
4.5      Form of  Common  Stock  and  Warrant  Purchase  Agreement,  dated as of
         September   16,  2003,   between   Essex  Trading  Ltd.  and  Xybernaut
         Corporation.
4.6      Form of Registration Rights Agreement,  dated as of September 16, 2003,
         between Essex Trading Ltd. and Xybernaut Corporation.
4.7      Letter   Agreement,   dated  as  of  May  30,  2003,   between  Sundial
         Investments, Limited and Xybernaut Corporation.
5.1      Opinion of Jenkens & Gilchrist Parker Chapin LLP.
23.1     Consent of Grant Thornton LLP.
23.2     Consent of Jenkens & Gilchrist  Parker  Chapin LLP  (included  in their
         opinion filed as Exhibit 5.1).