UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

         Date of Report (date of earliest event reported): May 10, 2005

                             CARRIZO OIL & GAS, INC.
             (Exact name of registrant as specified in its charter)

        Texas                      000-29187-87               76-0415919
     (State or other               (Commission             (I.R.S. Employer
     jurisdiction of               File Number)           Identification No.)
      incorporation)


           1000 Louisiana Street
                 Suite 1500
               Houston, Texas                                     77002
   (Address of principal executive offices)                     (Zip code)

       Registrant's telephone number, including area code: (713) 328-1000


                                       N/A
         (Former name or former address, if changed since last report.)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)
[ ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)
[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))
[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c))




Item 2.02         Results of Operations and Financial Condition.

          The press release by Carrizo Oil & Gas,  Inc. (the  "Company" or "we")
dated May 10, 2005 concerning  financial results for the quarter ended March 31,
2005,  furnished as Exhibit 99.1 to this report,  is  incorporated  by reference
herein.  The press  release  contains  measures  which  may be deemed  "non-GAAP
financial  measures" as defined in Item 10 of Regulation  S-K of the  Securities
Exchange Act of 1934,  as amended.  We discuss  EBITDA,  as defined in the press
release,  for the quarters  ended March 31, 2004 and 2005.  The most  comparable
GAAP financial  measure,  net income,  and information  reconciling the GAAP and
non-GAAP  measures  were also  included in the press  release.  We believe  that
EBITDA, as defined, may provide additional information about our ability to meet
our future  requirements  for debt  service,  capital  expenditures  and working
capital. EBITDA, as defined, is a financial measure commonly used in the oil and
natural  gas  industry  and  should  not  be  considered  in  isolation  or as a
substitute  for  net  income,   operating  income,  cash  flows  from  operating
activities or any other measure of financial performance presented in accordance
with  generally  accepted  accounting  principles or as a measure of a company's
profitability or liquidity.  Because EBITDA, as defined,  excludes some, but not
all, items that affect net income, the EBITDA presented in the press release may
not be comparable to similarly titled measures of other companies.

          None of the  information  furnished in Item 2.02 and the  accompanying
exhibit  will be deemed  "filed" for  purposes  of Section 18 of the  Securities
Exchange Act of 1934, as amended,  nor will it be incorporated by reference into
any  registration  statement  filed by the Company under the  Securities  Act of
1933, as amended,  unless specifically  identified therein as being incorporated
therein by reference.  The  furnishing of the  information in this report is not
intended  to, and does not,  constitute  a  determination  or  admission  by the
Company,  that the  information in this report is material or complete,  or that
investors should consider this information before making an investment  decision
with respect to any security of the Company.

Item 9.01.        Financial Statements and Exhibits.

          (c) Exhibits.



Exhibit Number       Description
--------------       -----------
                  
99.1                 Press  Release  dated  May 10,  2005  Announcing  Financial
                     Results for the First Quarter 2005.







                                   SIGNATURES



          Pursuant to the  requirements of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                      CARRIZO OIL & GAS, INC.


                                      By: /s/ Paul F. Boling
                                          ------------------ 
                                      Name:  Paul F. Boling
                                      Title: Vice President and 
                                             Chief Financial Officer

Date:  May 10, 2005






                                  EXHIBIT INDEX



            The following exhibit is furnished pursuant to Item 2.02:



99.1     Press  Release  dated May 10, 2005 Announcing Financial Results for the
         First Quarter 2005.