Page 1 of 12
Exhibit Index on Page 2

FORM 11-K

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549


Annual Report Pursuant to Section 15(d) of the Securities Exchange Act
of 1934




(Mark One)

  [X]   ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
        EXCHANGE ACT OF 1934 [FEE REQUIRED].
             For the fiscal year ended:  December 31, 1996

  OR

  [     ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE
        ACT OF 1934 [NO FEE REQUIRED].
             For the transition period from       to



Commission file number     1- 3208

  A.    Full title of the plan and the address of the plan, if
        different from that of the issuer named below:

        Zep Manufacturing Company Profit Sharing/
        401(k) Retirement Plan


  B.    Name of issuer of the securities held pursuant to the plan and
        the address of the principal executive office:

        National Service Industries, Inc.
        1420 Peachtree Street, NE
        Atlanta, Georgia 30309



Page 2

REQUIRED INFORMATION

The following documents are filed as a part of this report:

1.   Financial Statements


     Plan  financial  statements  prepared  in  accordance  with  the  financial
     reporting requirements of ERISA include the following:

     Report of Independent Public Accountants

     Statements of Net Assets Available for Benefits as of December 31, 1996 and
     1995

     Statement  of Changes  in Net  Assets  Available  for  Benefits,  with Fund
     Information, for the Year Ended December 31, 1996

     Notes to Financial Statements

2.   Exhibits
                                                             Sequentially
                                                               Numbered
     The following exhibit is filed with this report:            Page

     23     Consent of Arthur Andersen LLP                        12



SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
trustees (or other persons who administer  the employee  benefit plan) have duly
caused this annual report to be signed on its behalf by the undersigned hereunto
duly authorized.

                              Zep Manufacturing Company Profit Sharing/
                              401(k) Retirement Plan


Date: June 18, 1997           By:   National Service Industries, Inc.
                                    Plan Administrator

                              By:    /s/ James S. Balloun
                              Name:  James S. Balloun
                              Title: Chairman and Chief Executive Officer



Page 3





                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS




To the Plan Administrator of
Zep Manufacturing Company
Profit Sharing/401(k) Retirement Plan:


We have audited the accompanying statements of net assets available for benefits
of  ZEP  MANUFACTURING  COMPANY  PROFIT  SHARING/401(k)  RETIREMENT  PLAN  as of
December  31, 1996 and 1995 and the related  statement  of changes in net assets
available for benefits,  with fund information,  for the year ended December 31,
1996.  These  financial   statements  are  the   responsibility  of  the  Plan's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the net assets available for benefits of the Plan as of
December 31, 1996 and 1995 and the changes in net assets  available for benefits
for the year ended  December  31, 1996 in  conformity  with  generally  accepted
accounting principles.

Our audits  were  performed  for the  purpose of forming an opinion on the basic
financial  statements taken as a whole. The fund information in the statement of
changes in net assets  available  for benefits is  presented  for the purpose of
additional  analysis rather than to present the changes in net assets  available
for  benefits  of each fund.  The fund  information  has been  subjected  to the
auditing procedures applied in the audits of the basic financial statements and,
in our opinion,  is fairly  stated in all  material  respects in relation to the
basic financial statements taken as a whole.




Atlanta, Georgia
June 12, 1997



Page 4






                            ZEP MANUFACTURING COMPANY

                      PROFIT SHARING/401(k) RETIREMENT PLAN


                 STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS

                           DECEMBER 31, 1996 AND 1995







                                                           1996         1995

INVESTMENT IN NSI DC TRUST, at fair value (Note 2):
    Balanced Fund .................................   $ 31,021,864   $26,008,943
    Diversified Equity Fund .......................     34,447,797    25,767,562
    Stable Value Fund .............................     30,420,099    30,426,021
    NSI Stock Fund ................................      8,034,434     5,948,705
    Loan Fund .....................................      3,884,463     3,487,013
    International Fund ............................      1,604,209       609,181
              Total investment ....................    109,412,866    92,247,425
CONTRIBUTIONS RECEIVABLE:
    Employer ......................................              0     2,006,967
    Participant ...................................              0       288,794
              Total contributions receivable ......              0     2,295,761
NET ASSETS AVAILABLE FOR BENEFITS .................   $109,412,866   $94,543,186






The accompanying notes are an integral part of these statements.



Page 5

                            ZEP MANUFACTURING COMPANY

                      PROFIT SHARING/401(k) RETIREMENT PLAN


           STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS,

                             WITH FUND INFORMATION,

                      FOR THE YEAR ENDED DECEMBER 31, 1996








                                                  Diversified      Stable         NSI
                                       Balanced      Equity         Value        Stock          Loan    International
                                         Fund        Fund           Fund          Fund          Fund         Fund          Total
                                                                                                 

CONTRIBUTIONS:
    Employer .....................  $    543,265  $    690,569  $    705,086  $   209,745  $         0  $    52,502   $   2,201,167
    Participant ..................     1,228,272     1,577,428       860,454      410,204            0      106,051       4,182,409
       Total contributions .......     1,771,537     2,267,997     1,565,540      619,949            0      158,553       6,383,576

NET GAIN FROM INVESTMENT
IN NSI DC TRUST ..................     3,906,311     5,604,593     2,093,830    1,038,229            0      110,959      12,753,922

BENEFITS PAID TO PARTICIPANTS ....    (1,204,671)     (936,648)   (1,601,641)    (245,166)    (223,662)     (56,030)     (4,267,818)

INTRAPLAN TRANSFERS ..............       (41,113)    1,020,714    (2,847,163)     493,643      621,112      752,807               0
NET INCREASE (DECREASE) ..........     4,432,064     7,956,656      (789,434)   1,906,655      397,450      966,289      14,869,680

NET ASSETS AVAILABLE FOR BENEFITS,
December 31, 1995 ................    26,589,800    26,491,141    31,209,533    6,127,779    3,487,013      637,920      94,543,186
NET ASSETS AVAILABLE FOR BENEFITS,
 December 31, 1996 ...............  $ 31,021,864  $ 34,447,797  $ 30,420,099  $ 8,034,434  $ 3,884,463  $ 1,604,209   $ 109,412,866







The accompanying notes are an integral part of this statement.



Page 6


                            ZEP MANUFACTURING COMPANY

                      PROFIT SHARING/401(k) RETIREMENT PLAN


                          NOTES TO FINANCIAL STATEMENTS

                           DECEMBER 31, 1996 AND 1995



  1.  PLAN DESCRIPTION

     The  following  is a brief  description  of the Zep  Manufacturing  Company
     Profit  Sharing/401(k)  Retirement  Plan (the  "Plan") of Zep  Division  of
     National  Service  Industries,  Inc.  of Georgia  and Zep  Division  of Zep
     Manufacturing  Company  (together,  the "Employer").  Both National Service
     Industries,  Inc. of Georgia and Zep Manufacturing Company are wholly owned
     subsidiaries of National Service Industries, Inc. ("NSI"). This description
     is provided for informational  purposes only.  Participants should refer to
     the plan agreement for more complete information.

      General

     The Plan is a defined contribution plan established under the provisions of
     Section  401(a) of the Internal  Revenue Code ("IRC").  The Plan covers all
     salaried,  commissioned,  and union and  nonunion  hourly  employees of the
     Employer  with at least six months of service and who have attained the age
     of 21. The Plan is subject to the  provisions  of the  Employee  Retirement
     Income Security Act of 1974, as amended.

      Contributions

     Participants  may  elect to  contribute  between  1% and 15% of  before-tax
     compensation,  as defined in the Plan, subject to certain limitations under
     the IRC.

     The Employer makes a profit-sharing  contribution to the Plan for salaried,
     commissioned,  and nonunion hourly employees in the amount of (a) 5% of net
     profits, as defined, plus an amount which represents the same percentage of
     total annual compensation of all hourly paid employees who are participants
     of the Plan as the 5% of net profits bears to the total annual compensation
     of the salaried and commissioned  employees who are participants under this
     Plan and (b)  multiplied by a fraction which  represents  the  relationship
     between the annual compensation of all salaried, commissioned, and nonunion
     hourly  employees  to the  annual  compensation  of all  employees  who are
     qualifying  participants in the Plan. Annual compensation included for each
     participant  shall  not  exceed  $40,000.   An  additional  amount  may  be
     contributed at the discretion of the board of directors of NSI.

     The Employer also makes a  profit-sharing  contribution to the Plan for the
     union employees,  which is calculated in a similar manner as that described
     above.


Page 7

      Employer  contributions are allocated to all participants who are actively
      employed  on  November 30 of the plan year and who have a year of service,
      as  defined,  during  the plan  year  which  contains  such  November  30.
      Allocations are made based on each qualifying  participant's  compensation
      relative  to the  compensation  of  all  qualifying  participants,  with a
      limitation on compensation considered of $40,000.

      Vesting

      Participants  are always fully vested in their  individual  contributions.
      Vesting of employer  contributions  occurs on an increasing scale, ranging
      from 20% vesting after three years of service, as defined, to 100% vesting
      after  seven  years  of  service.  Nonvested  employer  contributions  are
      forfeited upon a participant's  withdrawal from the Plan and are allocated
      to remaining participants in the same manner as contributions.

      Administration

      The responsibility for administration of the  Plan rests  with  the Plan's
      profit-sharing committee, which is appointed by the board of  directors of
      NSI.  All administrative  expenses of  the  Plan were paid by the Employer
      during the year ended December 31, 1996.

      Participants' Accounts

      Individual accounts are maintained for each of the Plan's  participants to
      reflect the particular  participant's  contributions and related  employer
      contributions as well as the  participant's share of the Plan's income and
      any related administrative expenses.

      The Plan assigns units to its participants. At December 31, 1996 and 1995,
      11,359,095 and 10,421,383  units,  respectively,  were  assigned  to  plan
      participants.  Unit values for  each investment  fund were  as  follows at
      December 31, 1996 and 1995:

                                                     1996          1995

          Balanced Fund ..................      $     26.40   $     22.95
          Diversified Equity Fund ........            12.05         10.57
          Stable Value Fund ..............            11.31         10.59
          NSI Stock Fund .................            14.52         12.39
          International Fund .............             5.01          4.59

      Investment in Master Trust

      Under a trust agreement dated September 1, 1993, as amended, Wachovia Bank
      of Georgia,  N.A. was appointed  trustee of the NSI Defined   Contribution
      Plans Master Trust (the "NSI DC Trust").

      The Plan's  assets are  commingled  in the NSI DC Trust  together with the
      assets of certain defined  contribution plans of other NSI divisions.  The
      investments  of the NSI DC Trust are  subject  to  certain  administrative
      guidelines  and  limitations  as to type and  amount of  securities  held.

Page 8

      Certain  fund  assets are  allocated  to selected  independent  investment
      managers to invest under these general guidelines.

      Investment Options

      The separate investment options  made available  under  the  Plan  may  be
      changed, eliminated, or  modified  from  time  to  time  by the investment
      committee  of  the  NSI  DC  Trust.  Participants  make  their  investment
      elections in 5% increments, with changes allowed on a daily basis.

      The separate investment options offered by the Plan are as follows:

     o    Diversified  Equity  Fund.  This  fund  is a  diversified  stock  fund
          designed to invest in a broad range of common stocks providing capital
          growth.

     o    Stable Value Fund.  This is a fixed income fund  designed to provide a
          steady  level of current  income  while  focusing on  preservation  of
          principal.

     o    Balanced Fund. This fund is invested in a changing mix of high-quality
          stocks and bonds.  The fund is designed to provide  capital growth and
          current income while limiting the risk of principal loss.

     o    NSI Stock Fund. This fund is invested in NSI common stock, although it
          may hold other short-term investments from time to time. A participant
          may not direct more than 50% of his/her account balance to be invested
          in this fund.

     o    International  Fund.  This fund is  invested  in the stock of non-U.S.
          companies and is designed to provide long-term growth.

      Loans to Participants

      The Plan  permits  loans to  participants  up to the  lesser of 50% of the
      participant's  vested account balance or $50,000.  A participant has up to
      five years to repay the principal and interest.  Loan  processing fees are
      charged directly to the participant's account.  Interest rates on loans to
      participants  are determined  based on market rates,  as determined by the
      plan administrator.

      Benefits

      A participant  is entitled to receive the  distribution  of his/her vested
      account  balance upon death,  disability,  or retirement (age 65 or age 55
      with ten years of  credited  service).  These  benefits  are  payable in a
      lump-sum  amount or can be paid in  installments  at the  election  of the
      participant.   The   vested   portion   of  the   participant's   employer
      contributions  is  generally  distributable  on the first day of the first
      month  following  the later of  his/her  termination  date or  sixty-fifth
      birthday. If this vested portion is less than $5,000, then the participant
      may elect to have his/her interest distributed immediately in a lump sum.

      Benefits are payable in cash,  except that any portion of a  participant's
      account  balance which  is  invested in the NSI Stock Fund is  distributed
      in the form of shares of NSI common  stock, with  fractional  shares  paid
      in cash.

Page 9


     Hardship  withdrawals  may be made  upon  proven  financial  hardship  of a
     participant, as defined in the plan agreement and as approved by the Plan's
     retirement committee.

      Plan Termination

     Although  the  Employer  intends  for the  Plan to be  permanent,  the Plan
     provides that the Employer has the right to discontinue contributions or to
     terminate  the Plan at any  time.  In the event of plan  termination,  each
     participant  shall be vested in the balance of his/her  account and his/her
     proportionate share of any future adjustments or forfeitures.


  2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      Basis of Accounting

     The accounts of the Plan are maintained by the trustee on the cash basis of
     accounting.  The accompanying financial statements have been prepared using
     the accrual method of accounting by application of memorandum entries.  The
     preparation of financial  statements in conformity with generally  accepted
     accounting  principles  requires the Plan's management to use estimates and
     assumptions   that  affect  the  accompanying   financial   statements  and
     disclosures. Actual results could differ from these estimates.

      Investment Valuation

     Investments  of the NSI DC  Trust,  except  for the  guaranteed  investment
     contracts  ("GICs"),  are stated at fair value as determined by the trustee
     from quoted market  prices.  Securities  traded on a national  exchange are
     valued at the last  reported  sales price on the last  business  day of the
     plan year;  investments  traded in the  over-the-counter  market and listed
     securities  for which no sale was reported on the last day of the plan year
     are valued at the last reported bid price.

     GICs  included  in the NSI DC Trust  are fully  benefit-responsive  and are
     therefore  carried at contract  value (cost plus  accrued  interest) in the
     accompanying  financial statements in accordance with Statement of Position
     94-4.  At December  31, 1996 and 1995,  contract  value  approximates  fair
     value. At December 31, 1996, the weighted average  crediting  interest rate
     was 6.74%.  For the year ended  December 31, 1996,  the annual yield on the
     GICs held by the NSI DC Trust was 6.9%. For certain of the GICs held by the
     NSI DC Trust,  crediting  interest  rates may be changed if certain  events
     occur, such as early retirements,  plant closings, etc., but in no case are
     adjusted  to a rate less than 0%.  GICs are subject to credit risk based on
     the  ability  of the  insurance  company  to  meet  interest  or  principal
     payments, or both, as they become due.


Page 10


  3.  NSI DC TRUST

      Investment Income

     Investment  income of the NSI DC Trust for the year ended December 31, 1996
     is summarized as follows:

          Dividends on common stock ....................   $   360,166
          Interest income ..............................     4,320,463
          Net appreciation in fair value of common stock     1,031,354
          Net income from mutual fund ..................    10,129,284
          Net income from common/collective trust ......     7,315,993
          Net income from pooled separate account ......       160,826
                        Total investment income ........   $23,318,086

     The  investment  income of the NSI DC Trust for the year ended December 31,
     1996 is allocated among participating plans as follows:

          Zep Manufacturing Company Profit
          Sharing/401(k) Retirement Plan  ...........      $12,753,922
           All other NSI plans ......................       10,564,164
                        Total .......................      $23,318,086


      Net Assets

     The net assets of the NSI DC Trust are as follows at December  31, 1996 and
     1995:

                                                    1996              1995

          Mutual fund ......................   $  63,411,122    $  47,636,487
          Common/collective trust ..........      57,558,795       48,146,903
          Guaranteed investment contracts ..      55,187,898       55,129,605
          Loans receivable from participants       6,828,607        6,104,302
          NSI common stock .................      11,279,289        7,637,554
          Money market fund ................       3,704,985        1,377,443
          Pooled separate account ..........       2,723,094          871,467
                                                 200,693,790      166,903,761
           Cash ............................          13,342          127,031
                                                 200,707,132      167,030,792
           Accrued investment income .......         100,534           76,779
          Adjustments for pending trades ...        (223,542)        (211,964)
          Other ............................         (54,239)          49,961
          Net assets .......................   $ 200,529,885    $ 166,945,568


Page 11

     The allocation of the net assets of the NSI DC Trust to participating plans
     is based on participant units and is as follows as of December 31, 1996 and
     1995:

                                              1996                  1995
                                       Amount     Percent     Amount     Percent

Zep Manufacturing Company Profit
    Sharing/401(k) Retirement Plan   $109,412,866    54.6%  $ 92,247,425   55.3%
All other plans ..................     91,117,019    45.4     74,698,143   44.7
             Total ...............   $200,529,885   100.0%  $166,945,568  100.0%


      Investment in NSI Common Stock

     As  of  December   31,  1996  and  1995,   approximately   5.6%  and  4.6%,
     respectively,  of the NSI DC Trust's net assets were invested in the common
     stock of NSI, a party in interest to the Plan.


  4.  TAX STATUS

      The Plan has received a favorable  determination  letter from the Internal
      Revenue  Service  dated May 21, 1996 stating that the Plan was designed in
      accordance  with plan design  requirements  as of that date.  The Plan has
      been amended since receiving the determination  letter.  However, the plan
      administrator  believes  that the Plan is currently  designed and is being
      operated  in  compliance  with  the  applicable  requirements  of the IRC.
      Therefore, the plan administrator believes that the Plan was qualified and
      that the related trust was tax-exempt as of December 31, 1996 and 1995.