Exhibit 31.1

                CERTIFICATION PURSUANT TO 15 U.S.C. SECTION 10A,
                      AS ADOPTED PURSUANT TO SECTION 302 OF
                         THE SARBANES-OXLEY ACT OF 2002

I, Robert Spivak, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of GRILL CONCEPTS, INC.;

2.   Based  on  my  knowledge,  this  report  does  not  contain  any  untrue
     statement  of a material fact or omit to state a material fact necessary to
     make  the  statements  made, in light of the circumstances under which such
     statements  were made, not misleading with respect to the period covered by
     this report;

3.   Based  on  my  knowledge,  the  financial  statements,  and other financial
     information included in this report, fairly present in all material respect
     the  financial  condition,  results  of  operations  and  cash flows of the
     registrant as of, and for, the periods presented in this report;

4.   The  registrant's  other  certifying  officer  and  I  are  responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

     a)   designed  such  disclosure  controls  and  procedures,  or caused such
          disclosure  controls  and  procedures  to  be  designed  under  our
          supervision,  to  ensure  that  material  information  relating to the
          registrant,  including its consolidated subsidiaries, is made known to
          us  by others within those entities, particularly during the period in
          which this quarterly report is being prepared;

     b)   [omitted  in  accordance  with  SEC  Release  Nos.  33-8238  and
           34-47986];

     c)   evaluated  the  effectiveness  of  the  registrant's  disclosure
          controls  and  procedures and presented in this report our conclusions
          about  the effectiveness of the disclosure controls and procedures, as
          of  the  end  of  the  period  covered  by  this  report based on such
          evaluation; and

     d)   disclosed  in  this  report  any  change  in the registrant's internal
          control over financial reporting that occurred during the registrant's
          most  recent  fiscal  quarter  that  has  materially  affected,  or is
          reasonably  likely  to  materially  affect,  the registrant's internal
          control over financial reporting; and

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5.   The  registrant's  other  certifying  officer  and  I have disclosed, based
     on our most recent evaluation of internal control over financial reporting,
     to  the  registrant's  auditors and the audit committee of the registrant's
     board of directors:

     a)   all  significant  deficiencies  and  material  weaknesses  in  the
          design or operation of internal control over financial reporting which
          are  reasonably likely to adversely affect the registrant's ability to
          record, process, summarize and report financial information; and

     b)   any  fraud,  whether  or  not  material,  that  involves management or
          other  employees  who  have  a  significant  role  in the registrant's
          internal controls over financial reporting.

Date: August 11, 2005              /s/ Robert Spivak
                                   -------------------------------------
                                   Robert Spivak
                                   President and Chief Executive Officer

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