EXHIBIT 31.1

CERTIFICATIONS

I, Angel Alvarez-Perez, certify that:

      1.    I have reviewed this quarterly report on Form 10-Q of First
            BanCorp.;

      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 quarterly report, fairly present in all
            material respects 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, or caused such
                        disclosure controls and procedures to be designed under
                        our supervision, and procedures 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)   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

                  (c)   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

      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 (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 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 control over financial
                        reporting.

Date: August 9, 2004                      By:  /s/ Angel Alvarez-Perez
                                               ---------------------------------
                                                   Angel Alvarez-Perez, Esq.
                                                   Chairman, President and
                                                   Chief Executive Officer