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UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C.
20549

FORM 40-F/A(Amendment No. 1)

[Check one]

[    ] REGISTRATION STATEMENT PURSUANT TO SECTION
12 OF THE SECURITIES EXCHANGE ACT OF 1934

OR

[X] ANNUAL REPORT PURSUANT TO SECTION 13(a) OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

|For the fiscal year ended December 31, 2009 | Commission File Number 001-31891
|------------------------------------------- | --------------------------------

TransGlobe Energy
Corporation(Exact name of Registrant as specified in its
charter)

__________________________________________________(Translation
of Registrant's name into English (if applicable))

Alberta, Canada(Province or other jurisdiction
of incorporation or organization)

1311(Primary Standard Industrial
Classification Code Number (if applicable))

__________________________________________________(I.R.S.
Employer Identification Number (if applicable))

Suite 2500, 605  Fifth Avenue SW, Calgary, Alberta,
Canada T2P 3H5(Address and telephone number of Registrant's
principal executive offices)

John L. Mericle Harris, Mericle & Wakayama 901
Fifth Avenue, Suite 4100 Seattle, Washington 98164tel.: (206)
621-1818(Name, address (including zip code) and telephone number
(including area code) Of agent for service in the United States)

Securities registered or to be registered pursuant to Section
12(b) of the Act.

|Title of each class             | Name of each exchange on which registered
|------------------------------- | -----------------------------------------
|                                | The NASDAQ Stock Market LLC              
|Common Shares Without Par Value | (Global Select Market)                   

Securities registered or to be registered pursuant to Section
12(g) of the Act.

None(Title of Class)

Securities for which there is a reporting obligation pursuant to
Section 15(d) of the Act.

None(Title of Class)

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For annual reports, indicate by check mark the information filed
with this Form:

[X] Annual information form [X] Audited annual financial
statements

Indicate the number of outstanding shares of each of the
issuers classes of capital or common stock as of the close of the period
covered by the annual report.

The number of shares outstanding of the issuers common
shares as of fiscal year ended December 31, 2009 was 65,398,639.

Indicate by check mark whether the Registrant by filing the
information contained in this Form is also thereby furnishing the information to
the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of
1934 (the Exchange Act). If Yes is marked, indicate the file number assigned
to the Registrant in connection with such Rule.

Yes [   ] 82-     No [X]

Indicate by check mark whether the Registrant (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Exchange Act during
the preceding 12 months (or for such shorter period that the Registrant was
required to file such reports) and (2) has been subject to such filing
requirements for the past 90 days.

Yes [X] No [   ]

Indicate by check mark whether the registrant has submitted electronically
  and posted on its corporate Web site, if any, every Interactive Data File required
  to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405
  of this chapter) during the preceding 12 months (or for such shorter period
  that the Registrant was required to submit and post such files).

Yes [   ] No [   ]

This Interactive Data File requirement is not applicable to the
Registrant. See General Instruction B.(15) of SEC Form 40-F.

EXPLANATORY NOTE

The Registrant is filing this Amendment No. 1 to its Annual
Report on Form 40-F for the fiscal year ended December 31, 2009, that was filed
with the U.S. Securities and Exchange Commission (SEC) on March 22, 2010, to
make the following amendments:

|(1) | Insert a check mark in the box labeled Audited annual
      financial statements on the cover page of this Amendment No. 1 to its
      Annual Report on Form 40-F to indicate that the Registrant did in fact
      file its consolidated audited annual financial statements as Exhibit 99.2
      to its Annual Report on Form 40-F for the fiscal year ended December 31,
      2009; and
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|    |                                                                                                                                                                                                                                                                                                                                                                                                
|(2) | File an amended Canadian Annual Information Form (AIF)
      as Exhibit 99.1 to this Amendment No. 1 to its Annual Report on Form 40-F,
      to reflect the revision of certain statements at pages 29-30 of the AIF
      pertaining to reserve reconciliations.                                                                                                                           

Other than (1) as expressly set forth above in this Explanatory
Note, and (2) with respect to the accompanying certifications, which speak as of
the filing date of this Amended Form 40-F, this Amendment No. 1 does not, and
does not purport to, update or restate the information contained in the
Registrants Annual Report on Form 40-F for the fiscal year ended December 31,
2009 and exhibits thereto, or reflect any events that have occurred after the
Registrants Annual Report on Form 40-F for the fiscal year ended December 31,
2009 and exhibits thereto were initially filed on March 22, 2010. The filing of
this Amended Form 40-F shall not be deemed an admission that the previous Form
40-F, when filed, included any untrue statement of a material fact or omitted to
state a material fact necessary to make any statement made, in the light of the
circumstances under which it was made, not misleading.

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SIGNATURES

Pursuant to the requirements of the Exchange Act, the
Registrant certifies that it meets all of the requirements for filing on Form
40-F/A and has duly caused this Annual Report on Form 40-F/A to be signed on its
behalf by the undersigned, thereto duly authorized.

|Registrant: | TRANSGLOBE ENERGY CORPORATION             | 
|----------- | ----------------------------------------- | 
|            |                                           | 
|By:         | /s/
      Ross Clarkson                   | 
|            | Ross G. Clarkson, Chief Executive Officer | 
|            |                                           | 
|Date:       | May 26 2010                               | 

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EXHIBITS

|31.1 | Certification
        by the Chief Executive Officer of the Registrant pursuant to Rule 13a-14(a)
        of the Exchange Act, as adopted pursuant to Section 302 of the Sarbanes-Oxley
        Act of 2002.
|---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|     |                                                                                                                                                                                                             
|31.2 | Certification
        by the Chief Financial Officer of the Registrant pursuant to Rule 13a-14(a)
        of the Exchange Act, as adopted pursuant to Section 302 of the Sarbanes-Oxley
        Act of 2002.
|     |                                                                                                                                                                                                             
|32.1 | Certification
        by the Chief Executive Officer of the Registrant pursuant to 18 U.S.C.
        Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
        Act of 2002.            
|     |                                                                                                                                                                                                             
|32.2 | Certification
        by the Chief Financial Officer of the Registrant pursuant to 18 U.S.C.
        Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
        Act of 2002.            
|     |                                                                                                                                                                                                             
|99.1 | TransGlobe
        Energy Corporation Amended Annual Information Form for the year ended
        December 31, 2009 dated May 26, 2010.                                                                      

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