As filed with the Securities and Exchange Commission on July 30, 1997

                                                   Registration No. 333-________
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                               ------------------
                                    FORM S-8
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                               ------------------
                          ORION NETWORK SYSTEMS, INC.
             (Exact name of registrant as specified in its charter)

               DELAWARE                               52-2008654
   (State or other jurisdiction             (I.R.S. Employer Identification No.)
 of incorporation or organization)

                               ------------------
 
                      2440 RESEARCH BOULEVARD, SUITE 400
                           ROCKVILLE, MARYLAND 20850
                    (Address of principal executive offices)
 
                              ------------------
 
               ORION NETWORK SYSTEMS, INC. 1997 STOCK OPTION PLAN
                            (Full title of the plan)

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

                             RICHARD H. SHAY, ESQ.
                       2440 RESEARCH BOULEVARD, SUITE 400
                           ROCKVILLE, MARYLAND 20850
                                 (301) 258-8101
(Name, address and telephone number, including area code, of agent for service)

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

                                    Copy to:
                            STEVEN M. KAUFMAN, ESQ.
                             HOGAN & HARTSON L.L.P.
                          555 THIRTEENTH STREET, N.W.
                          WASHINGTON, D.C. 20004-1109
                                 (202) 637-5600

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

                         CALCULATION OF REGISTRATION FEE

 


=================================================================================================================
                                                  Proposed                Proposed 
Title of securities      Amount to be         maximum offering         maximum  aggregate         Amount of
 to be registered         registered         price  per share (1)      offering price (1)    registration fee (1)
- -----------------------------------------------------------------------------------------------------------------
                                                                                       
Common Stock,
  par value $.01            1,300,000              $12.875                $16,737,500              $5,072
=================================================================================================================


(1)  Estimated   pursuant  to  Rule  457(c)  and  (h)  solely  for  purposes  of
     calculating  the  amount of the  registration  fee.  The  proposed  maximum
     offering price per share was determined  based upon the average of the high
     and low prices per share of the Orion Network Systems, Inc. Common Stock on
     July 25, 1997, as reported on the Nasdaq National Market.





                                     PART I

              INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

         The documents  containing the  information  specified in Part I will be
sent or given to  eligible  directors  as  specified  by Rule  428(b)(1)  of the
Securities Act of 1933, as amended (the  "Securities  Act").  In accordance with
the  instructions  to Part I of Form S-8, such  documents will not be filed with
the Securities and Exchange Commission (the "Commission") either as part of this
Registration  Statement or as prospectuses or prospectus supplements pursuant to
Rule 424 of the Securities Act. 

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

         Orion Network  Systems,  Inc. (the  "Registrant")  is a recently formed
Delaware  corporation  that is the corporate  successor to Orion Oldco Services,
Inc.,  which has been filing  reports with the  Commission  under the Securities
Exchange Act of 1934, as amended (the  "Exchange  Act"),  since August 1995. The
Registrant hereby incorporates by reference into this Registration Statement the
following documents filed with the Commission by the Registrant:

                  (a)  Registrant's  annual  report on Form 10-K dated March 31,
1997 and amendment  thereto on Form 10-K/A dated June 25, 1997 filed pursuant to
Sections 13(a) and 15(d) of the Exchange Act, which contain  audited  financial
statements for Registrant's fiscal year ended December 31, 1996;

                  (b) All other  reports of the  Registrant  filed  pursuant  to
Section  13(a) or 15(d) of the Exchange Act since  December 31, 1996,  including
the Registrant's quarterly report on Form 10-Q dated May 15, 1997;

                  (c) The  description  of the  Registrant's  Common Stock,  par
value  $.01 per  share  (the  "Common  Stock"),  contained  in the  Registrant's
Registration  Statement  on Form 8-B filed with the  Commission  on January  31,
1997; and
                  (d) The  Registrant's  reports  on Form  8-K  filed  with  the
Commission on February 14, 1997 and March 26, 1997, respectively.

         In  addition,  all  documents  and  reports  filed  by  the  Registrant
subsequent to the date hereof pursuant to Sections 13(a), 13(c), 14, or 15(d) of
the  Exchange  Act,  prior to the  filing of a  post-effective  amendment  which
indicates that all securities  offered have been sold or which  deregisters  all
securities  remaining unsold, shall be deemed to be incorporated by reference in
this  Registration  Statement  and to be part  hereof from the date of filing of
such documents or reports. Any statement contained in a document incorporated or
deemed to be incorporated by reference  herein shall be deemed to be modified or
superseded  for  purposes of this  registration  statement  to the extent that a
statement  contained  herein or in any other  subsequently  filed document which



                                       2



also  is or is  deemed  to be  incorporated  by  reference  herein  modifies  or
supersedes  such statement.  Any such statement so modified or superseded  shall
not be deemed, except as so modified or superseded, to constitute a part of this
registration statement.

ITEM 4.  DESCRIPTION OF SECURITIES.

         Not applicable. (The Common Stock is registered under Section 12 of the
Exchange Act.)

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL.
  
         Not applicable.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
         
         The Company's  Restated  Certificate of Incorporation,  as amended (the
"Restated Certificate of Incorporation"),  provides that the Company's directors
will not be liable for monetary  damages for breach of the directors'  fiduciary
duty of care to the Company and its stockholders. This provision in the Restated
Certificate  of  Incorporation  does not  eliminate  the  duty of  care,  and in
appropriate  circumstances  equitable  remedies  such as an  injunction or other
forms of  non-monetary  relief would remain  available  under  Delaware  law. In
accordance  with the  requirements  of Delaware  law, as amended,  the  Restated
Certificate of Incorporation  provides that the Company's directors would remain
subject to liability  for  monetary  damages (i) for any breach of their duty of
loyalty to the Company or its  shareholders,  (ii) for acts or omissions  not in
good faith or  involving  intentional  misconduct  or knowing  violation of law,
(iii)  under  Section  174 of the  Delaware  Code for  approval  of an  unlawful
dividend  or  an  unlawful  stock  purchase  or  redemption  and  (iv)  for  any
transaction from which the director derived an improper personal  benefit.  This
provision  also does not affect a  director's  responsibilities  under any other
laws,  such as the  federal  securities  laws or state or federal  environmental
laws.

         The Company's Restated Certificate of Incorporation also provides that,
except as expressly  prohibited by law, the Company  shall  indemnify any person
who was or is a party  (or  threatened  to be made a party)  to any  threatened,
pending or completed action,  suit or proceeding by reason of the fact that such
person is or was  director or office of the Company (or is or was serving at the
request of the Company as a director or officer of another enterprise),  against
expenses,  liabilities and losses (including attorneys' fees), judgments,  fines
and amounts paid or to be 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 a manner such person reasonably believed to be in or not
opposed to the best interests of the Company,  and, with respect to any criminal
action or proceeding,  had no reasonable cause to believe his or her conduct was
unlawful.  Such indemnification shall not be made in respect of any claim, issue
or matter as to which such person  shall have been  adjudged to be liable to the
Company  unless (and only to the extent that) the Delaware  Court of Chancery or
the court in which such action or suit was brought  determines  that, in view of
all the circumstances of the case, such person is fairly and reasonably entitled
to indemnity.

         Section  145 of the  General  Corporation  Law of the State of Delaware
empowers  a  corporation  incorporated  under  that  statute  to  indemnify  its
directors,  officers,  employees and agents and its former directors,  officers,
employees  and  agents  and  those  who serve in such  capacities  with  another
enterprise at its request  against  expenses,  as well as  judgments,  fines and
settlements in nonderivative lawsuits,  actually and reasonably incurred by them
in connection with the defense of any action,  suite or proceeding in which they
or any of them were or are made parties or are  threatened to be made parties by



                                       3



reason  of their  serving  or  having  served  in such  capacity.  The  power to
indemnify shall only exist where such officer,  director,  employee or agent has
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,  in the case of a
criminal  action,  where such  person  had no  reasonable  cause to believe  his
conduct was  unlawful.  However,  in an action or suit by or in the right of the
corporation, unless a court shall determine to the contrary, where such a person
has been adjudged liable to the corporation, the corporation shall have no power
of  indemnification.  Indemnity  is  mandatory  to the extent a claim,  issue or
matter has been successfully  defended.  Indemnification is not deemed exclusive
of any other  rights  to which  those  indemnified  may be  entitled,  under any
by-law,  agreement,  vote of stockholders or otherwise.  A Delaware  corporation
also has the power to purchase and  maintain  insurance on behalf of the persons
it has the power to indemnify,  whether or not indemnity  against such liability
would be allowed under the statute.

         The Company has an  insurance  policy which will insure  Directors  and
officers against damages from actions and claims incurred in the course of their
duties and will  insure the  Company  against  expenses  incurred  in  defending
lawsuits arising from certain alleged acts of the Directors and officers.

         Insofar as indemnification for liabilities arising under the Securities
Act 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 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 such issue.

ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED.

         Not applicable.


ITEM 8.  EXHIBITS.

         Exhibit
         Number     Description
         ------     -----------


          3.1       Certificate of Amendment of Certificate of  Incorporation of
                    Orion Network Systems, Inc.
         
          4.1       Restated  Certificate  of  Incorporation,   as  amended,  of
                    Registrant   (filed  as  Exhibit  3.1  to  the  Registrant's
                    Registration Statement on Form 8-B filed with the Commission
                    on January 31, 1997, and incorporated herein by reference).
         
         
                                       4



          4.2       Bylaws, as amended,  of the Registrant (filed as Exhibit 3.2
                    to the Registrant's Registration Statement on Form 8-B filed
                    with the  Commission on January 31, 1997,  and  incorporated
                    herein by reference).

          4.3       Form of Common  Stock  Certificate  (filed as Exhibit 4.5 to
                    the  Registrant's  Registration  Statement on Form S-4 (File
                    No. 333- 19795), and incorporated herein by reference).

          4.4       Orion Network Systems, Inc. 1997 Stock Option Plan.

        
          5.1       Opinion of Hogan & Hartson L.L.P.  regarding the legality of
                    the securities being registered.

         21.1       List of subsidiaries of Orion Network Systems, Inc.

         23.1       Consent of Ernst & Young LLP

         23.2       Consent of Hogan & Hartson L.L.P. (included in their opinion
                    filed as Exhibit 5.1 hereto).

         24.1       Power of Attorney (included on signature pages).

ITEM 9.  UNDERTAKINGS.

         (a)      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;

                           (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;

                           (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;

                  Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do
not  apply  if the  Registration  Statement  is on Form  S-3 or Form S-8 and the
information  required  to be  included in a  post-effective  amendment  by those
paragraphs is contained in periodic reports filed by the Registrant  pursuant to
Section  13 or  Section  15(d) of the  Exchange  Act that  are  incorporated  by
reference in the Registration Statement.

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


                                       5



                  (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.

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

         (c) The  undertaking concerning  indemnification  is as set forth under
the response to Item 6.






                                       6



                                   SIGNATURES

         Pursuant to the  requirements  of the  Securities  Act, the  Registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-8 and has  duly  caused  this  Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of Rockville, State of Maryland on the 30th day of July,
1997.

                                     ORION NETWORK SYSTEMS, INC.

                                     BY: /s/ W. NEIL BAUER
                                         ---------------------------------------
                                         W. Neil Bauer
                                         President and Chief Executive Officer

                               POWER OF ATTORNEY

         Know all Men by These Presents,  that each  individual  whose signature
appears below  constitutes and appoints John G. Puente,  W. Neil Bauer and David
J. Frear, and each of them, his true and lawful attorney-in-fact and agent, with
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  (including
post-effective amendments) to this Registration Statement, and to file the same,
with all exhibits thereto and other 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,  his or her  substitutes or  substitute,  may
lawfully do or cause to be done by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this  Registration  Statement has been signed below by the following  persons in
the capacities and on the dates indicated.


         Signature                          Title                      Date
         ---------                          -----                      ----

     /s/ W. NEIL BAUER                 Chief Executive             July 30, 1997
- ------------------------------      Officer and Director
 W. Neil Bauer, President         (Principal Executive Officer)


   /s/ DAVID J. FREAR                   Chief Financial            July 30, 1997
- ------------------------------      Officer and Treasurer
 David J. Frear, Vice President  (Principal Financial Officer
                                and Principal Accounting Officer)


   /s/ GUSTAVE M. HAUSER                     Director              July 30, 1997
- ------------------------------
 Gustave M. Hauser, Chairman



                                       7





   /s/ JOHN V. SAEMAN                         Director             July 30, 1997
- -----------------------------     
     John V. Saeman


   /s/ JOHN G. PUENTE                         Director             July 30, 1997
- -----------------------------
     John G. Puente


   /s/ RICHARD J. BREKKA                      Director             July 30, 1997
- -----------------------------
    Richard J. Brekka


   /s/ WARREN B. FRENCH JR.                   Director             July 30, 1997
- ----------------------------- 
    Warren B. French, Jr.


   /s/ SIDNEY S. KAHN                         Director             July 30, 1997
- -----------------------------
     Sidney S. Kahn


   /s/ W. ANTHONY RICE                        Director             July 30, 1997
- -----------------------------
    W. Anthony Rice


   /s/ ROBERT M. VAN DEGNA                    Director             July 30, 1997
- -----------------------------
    Robert M. Van Degna


   /s/ BARRY HOROWITZ                         Director             July 30, 1997
- -----------------------------
    Barry Horowitz



                                       8





                                  EXHIBIT INDEX


Exhibit
 Number                            Description                           Page
 ------                            -----------                           ----

   3.1  Certificate of Amendment of Certificate of Incorporation of Orion
        Network Systems, Inc.


   4.1  Restated   Certificate  of  Incorporation,   as  amended,   of     *
        Registrant   (filed  as  Exhibit   3.1  to  the   Registrant's
        Registration  Statement on Form 8-B filed with the  Commission
        on January 31, 1997, and incorporated herein by reference). 

   4.2  Bylaws, as amended, of the Registrant (filed as Exhibit 3.2 to     *
        the Registrant's Registration Statement on Form 8-B filed with
        the Commission on January 31, 1997, and incorporated herein by
        reference). 

   4.3  Form of Common Stock Certificate  (filed as Exhibit 4.5 to the     *
        Registrant's  Registration  Statement  on Form S-4  (File  No.
        333-19795), and incorporated herein by reference).

   4.4  Orion Network Systems, Inc. 1997 Stock Option Plan.                *

   5.1  Opinion of Hogan & Hartson  L.L.P.  regarding  the legality of
        the securities being registered.
 
  21.1  List of subsidiaries of Orion Network Systems, Inc.

  23.1  Consent of Ernst & Young LLP.

  23.2  Consent of Hogan & Hartson  L.L.P.  (included in their opinion     *
        filed as Exhibit 5.1 hereto). 

  24.1  Power of Attorney (included on signature pages).                   *