SecProbe.io

CORRESP
1
filename1.htm

    [Gran
      Tierra Letterhead]

    November
      9, 2007

    Via
      EDGAR

    Securities
      and Exchange Commission

    100
      F
      Street, N.E.

    Washington,
      D.C. 20549

                RE:

                Gran
                  Tierra Energy Inc.

                Registration
                  Statement on Form S-1

                Filed
                  October 26, 2007

                File
                  No. 333-146953

    Ladies
      and Gentlemen:

    The
      undersigned registrant hereby informs the Commission that it intends to file
      an
      Amendment No. 1 to the above-referenced Registration Statement on Tuesday,
      November 13, 2007, and requests that the Commission take appropriate action
      to
      cause the above-referenced Registration Statement on Form S-1, as so amended,
      to
      become effective at 3:00 p.m. Eastern Time on Tuesday, November 13, 2007 or
      as
      soon thereafter as is practicable.

    Further,
      Gran Tierra hereby confirms to the Commission:

            ·

              should
                the Commission or the staff, acting pursuant to delegated authority,
                declare the filing effective, it does not foreclose the Commission
                from
                taking any action with respect to the
                filing;

            ·

              the
                action of the Commission or the staff, acting pursuant to delegated
                authority, in declaring the filing effective, does not relieve the
                company
                from its full responsibility for the adequacy and accuracy of the
                disclosure in the filing; and

            ·

              the
                company may not assert the staff comments and the declaration of
                effectiveness as a defense in any proceeding initiated by the Commission
                or any person under the federal securities laws of the United
                States.

    Sincerely,

            Gran
              Tierra Energy Inc.

            /s/
              Martin
              Eden

                  By:

                  Martin
                    Eden

                  Chief
                    Financial Officer

                cc:

                Nancy
                  H. Wojtas and Brett D. White

                Cooley
                  Godward Kronish llp