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 15, 2007

GRAN TIERRA ENERGY INC.

(Exact name of Registrant as specified in its charter)
Nevada
98-0479924
(State or other jurisdiction of incorporation)
(I.R.S. Employer Identification No.)

Commission file number: 000-52594

300, 611 - 10th Avenue S.W.
Calgary, Alberta, Canada T2R 0B2
(Address of principal executive offices and zip code)

Registrant's telephone number, including area code: (403) 265-3221

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 (see General Instruction A.2. below):

[ ] 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.

On May 15, 2007, Gran Tierra Energy Inc. issued a press release announcing its fiscal 2007 first quarter financial results. A copy of the press release is attached as Exhibit 99.1 to this current report and is incorporated herein by reference.
 
The information in the report, including Exhibit 99.1 attached hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the U.S. Securities and Exchange Commission made by Gran Tierra Energy Inc., whether made before or after the date hereof, regardless of any general incorporation language in such filing.
 
 
Item 9.01 Financial Statements and Exhibits.
 
Exhibit
Number  
 Description
   
99.1
Press Release, dated May 15, 2007, Announcing Gran Tierra Energy Inc. Fiscal 2007 First Quarter Financial Results.
 
 
SIGNATURE

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.
 
 
 
Dated May 15, 2007
GRAN TIERRA ENERGY INC
 
 
 
 
 
 
By:
/s/ Martin H. Eden     
 
   
Martin H. Eden    
  
 
 
Chief Financial Officer
 
 

EXHIBIT INDEX
 
Exhibit
Number  
 Description
 
99.1
Press Release, dated May 15, 2007, Announcing Gran Tierra Energy Inc. Fiscal 2007 First Quarter Financial Results.