Page 79
                                                                      Exhibit 24
                                                                              

                                POWER OF ATTORNEY



     KNOW  ALL  MEN BY  THESE  PRESENTS,  that  each of the  undersigned  hereby
constitutes  and  appoints  David  Levy  and  Brock  Hattox,  and  each  of them
individually,  his  true  and  lawful  attorneys-in-fact  (with  full  power  of
substitution and resubstitution) to act for him in his name, place, and stead in
his capacity as a director or officer of National Service  Industries,  Inc., to
file a registrant's  annual report on Form 10-K for the fiscal year ended August
31, 1996, and any and all amendments  thereto,  with any exhibits  thereto,  and
other  documents  in  connection  therewith,  with the  Securities  and Exchange
Commission, granting unto said attorneys-in-fact, and each of them individually,
full  power  and  authority  to do and  perform  each and  every  act and  thing
requisite and necessary to be done in 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  or  either  of them,  or their  substitutes,  may
lawfully do or cause to be done by virtue hereof.



                      /s/ James S. Balloun
                      James S. Balloun, Chairman of the Board,
                      President and Chief Executive Officer, and Director

                                          
                      /s/ Brock Hattox
                      Brock Hattox, Executive Vice President and
                      Chief Financial Officer


                      /s/ Mark R. Bachmann
                      Mark R. Bachmann, Vice President and Controller
                      (Principal Accounting Officer)


                      /s/ David Levy
                      David Levy, Executive Vice President,
                      Administration and Counsel, and Director




Dated:  November 20, 1996



Page 80
Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ John L. Clendenin
                                   John L. Clendenin





Dated:  November 20, 1996




                                                                         Page 81
                                                                      Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ Robert M. Holder, Jr.
                                   Robert M. Holder, Jr.





Dated:  November 20, 1996





Page 82
Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ F. Ross Johnson
                                   F. Ross Johnson





Dated:  November 20, 1996




                                                                         Page 83
                                                                      Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ James C. Kennedy
                                   James C. Kennedy





Dated:  November 20, 1996





Page 84
Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ Donald R. Keough
                                   Donald R. Keough





Dated:  November 20, 1996




                                                                         Page 85
                                                                      Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ Bryan D. Langton
                                   Bryan D. Langton





Dated:  November 20, 1996





Page 86
Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ Bernard Marcus
                                   Bernard Marcus





Dated:  November 20, 1996




                                                                         Page 87
                                                                      Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ John G. Medlin, Jr.
                                   John G. Medlin, Jr.





Dated:  November 20, 1996





Page 88
Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ D. Raymond Riddle
                                   D. Raymond Riddle





Dated:  November 20, 1996




                                                                         Page 89
                                                                      Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ Herman J. Russell
                                   Herman J. Russell





Dated:  November 20, 1996


Page 90
Exhibit 24

                                POWER OF ATTORNEY


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  her true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for her in her name, place, and stead in her capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary  to be done in the  premises,  as fully to all intents and purposes as
she might or could do in person,  hereby  ratifying and confirming all that said
attorneys-in-fact  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.






                                   /s/ Betty L. Siegel
                                   Betty L. Siegel





Dated:  November 20, 1996


                                                                         Page 91
                                                                      Exhibit 24

                                POWER OF ATTORNEY




     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints David Levy and Brock Hattox,  and each of them  individually,  his true
and   lawful   attorneys-in-fact   (with   full   power  of   substitution   and
resubstitution)  to act for him in his name, place, and stead in his capacity as
a  director  or  officer  of  National  Service  Industries,  Inc.,  to  file  a
registrant's  annual  report on Form 10-K for the fiscal  year ended  August 31,
1996, and any and all amendments thereto,  with any exhibits thereto,  and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said attorneys-in-fact,  and each of them individually, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in 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  or either of them, or their  substitutes,  may lawfully do or
cause to be done by virtue hereof.







                                   /s/ Erwin Zaban
                                   Erwin Zaban





Dated:  November 20, 1996