EXHIBIT 23.1

                         Consent of Independent Auditors

We consent to the incorporation by reference in the Registration Statements
(Form S8 No. 333-35245 and No. 333-55838) pertaining to the Incentive Plan of
Carrizo Oil & Gas, Inc. of our report dated March 25, 2004, with respect to the
consolidated financial statements of Carrizo Oil & Gas, Inc. included in the
Annual Report (Form 10-K) for the year ended December 31, 2003.

                                                               ERNST & YOUNG LLP

Houston, Texas
March 29, 2004