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                                                                    EXHIBIT 12.1


                                  CERTIFICATION

I, Agustin Garcia Mansilla, certify that:

1.        I have reviewed this annual report on Form 20-F of Quilmes Industrial
          (QUINSA), Societe Anonyme;

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
          respects the financial condition, results of operations and cash flows
          of the company as of, and for, the periods presented in this report;

4.        the company's other certifying officer(s) 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 company
          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 company, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

         (b)      [reserved]

         (c)      evaluated the effectiveness of the company'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 company's internal
                  control over financial reporting that occurred during the
                  period covered by the annual report that has materially
                  affected, or is reasonably likely to materially affect, the
                  company's internal control over financial reporting; and

5.        the company's other certifying officer(s) and I have disclosed, based
          on our most recent evaluation of internal control over financial
          reporting, to the company's auditors and the audit committee of the
          company's Board of Directors (or persons performing the equivalent
          functions):

          (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 company'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 company's
               internal control over financial reporting.

QUILMES INDUSTRIAL (QUINSA), SOCIETE ANONYME


By:      /s/ Agustin Garcia Mansilla
         --------------------------------------------------
         Name:   Agustin Garcia Mansilla
         Title:  Chief Executive Officer

Date: June 30, 2006