UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 40-F

[Check one]

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

OR

o ANNUAL REPORT PURSUANT TO SECTION 13(a) or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended:                      Commission File Number:                    

CENOVUS ENERGY INC.

(Exact name of Registrant as specified in its charter)

Not applicable

(Translation of Registrant’s name into English (if applicable)

Canada

(Province or other jurisdiction of incorporation or organization)

1311	Not applicable
(Primary Standard Industrial	(I.R.S. Employer
Classification Code Number (if applicable))	Identification Number (if applicable))

4000, 421-7th Avenue S.W.
P.O. Box 766
Calgary, Alberta, Canada T2P 4K9
(403) 766-2000
(Address and telephone number of Registrant’s principal executive offices)

CT Corporation System
111-8^th Avenue, New York, New York 10011
(212) 894-8940
(Name, address (including zip code) and telephone number (including area code)
of agent for service in the United States)

copies to:

Kerry D. Dyte
Cenovus Energy Inc.
4000, 421-7th Avenue S.W.
P.O. Box 766
Calgary, Alberta, Canada T2P 4K9
(403) 766-2000 Andrew J. Foley
Paul, Weiss, Rifkind, Wharton & Garrison LLP
1285 Avenue of the Americas
New York, New York 10019-6064
(212) 373-3000

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
Common shares, no par value (including common share	New York Stock Exchange
purchase rights)

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)

For Annual Reports indicate by check mark the information filed with this Form:

o Annual information form      o 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:

Not applicable.

Indicate by check mark whether the Registrant 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, please indicate the filing number assigned to the Registrant in connection with such Rule.

Yes o 82-                        No þ

Indicate by check mark whether the Registrant (1) has filed all reports 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 filing requirements for the past 90 days.

Yes o No þ

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 o No o

TABLE OF CONTENTS

Exhibit 99.8

Exhibit 99.9

Exhibit 99.10

Exhibit 99.11

Exhibit 99.12

Exhibit 99.13

Exhibit 99.14

Exhibit 99.15

DOCUMENTS FILED AS PART OF THIS REGISTRATION STATEMENT

     The following documents have been filed as part of this Registration Statement on Form 40-F as Exhibits hereto:

Exhibits	Documents
99.1	Notice of Special Meeting of Shareholders and Information Circular Relating to an Arrangement Involving Cenovus Energy Inc. (the “Information Circular”), dated October 20, 2009, containing the audited Carve-Out Consolidated Financial Statements of Cenovus Energy as at December 31, 2008 and December 31, 2007 and for each of the years in the three year period ended December 31, 2008 and unaudited Carve-Out Consolidated Financial Statements of Cenovus Energy as at June 30, 2009, and for the three and six month periods ended June 30, 2008 and June 30, 2009 and management’s discussion and analysis thereon and a description of the Registrant’s common shares and common share purchase rights (incorporated by reference to the Form 6-K of EnCana Corporation filed with the Securities and Exchange Commission on October 29, 2009) (File No. 1-15226).
99.2	Annual Information Form of EnCana Corporation for the fiscal year ended December 31, 2008 (incorporated by reference to the Form 40-F of EnCana Corporation filed with the Securities and Exchange Commission on February 20, 2009) (File No. 1-15226).
99.3	Management’s Discussion and Analysis of EnCana Corporation as at December 31, 2008 and December 31, 2007 and for each of the years in the three year period ended December 31, 2008 (incorporated by reference to the Form 40-F of EnCana Corporation filed with the Securities and Exchange Commission on February 20, 2009) (File No. 1-15226).
99.4	Consolidated Financial Statements of EnCana Corporation as at December 31, 2008 and December 31, 2007 and for each of the years in the three year period ended December 31, 2008 (Note 23 to the Consolidated Financial Statements relates to United States Accounting Principles and Reporting (U.S. GAAP)) (incorporated by reference to the Form 40-F of EnCana Corporation filed with the Securities and Exchange Commission on February 20, 2009) (File No. 1-15226).
99.5	Consolidated Financial Statements of EnCana Corporation as at June 30, 2009, and for the three and six month periods ended June 30, 2008 and June 30, 2009 (incorporated by reference to Exhibit 99.1 to the Form 6-K of EnCana Corporation filed on July 27, 2009) (File No. 1-15226).
99.6	Management’s Discussion and Analysis of EnCana Corporation as at June 30, 2009, and for the three and six month periods ended June 30, 2008 and June 30, 2009 (incorporated by reference to Exhibit 99.2 to the Form 6-K of EnCana Corporation filed on July 27, 2009) (File No. 1-15226).
99.7	Information Circular of EnCana Corporation dated February 28, 2009 with respect to the annual meeting of EnCana Corporation shareholders held on April 22, 2009 (incorporated by reference to Exhibit 99.1 to the Form 6-K of EnCana Corporation filed on March 25, 2008) (File No. 1-15226).
99.8	Certificate of Incorporation and Articles of Incorporation effective April 23, 2001; Certificate of Amendment dated June 21, 2001; Certificate of Amendment dated April 29, 2002; Certificate of Amendment and Registration of Restated Articles, dated September 10, 2009, and Certificate of Continuance and Articles of Continuance dated September 21, 2009, respecting the incorporation of Cenovus Energy Inc.
99.9	By-Law No. 2 of Cenovus Energy Inc. effective September 24, 2009.
99.10	Shareholder Rights Plan Agreement, dated October 20, 2009, between 7050372 Canada Inc. and CIBC Mellon Trust Company.
99.11	Consent of PricewaterhouseCoopers LLP.
99.12	Consent of McDaniel & Associates Consultants Ltd.
99.13	Consent of GLJ Petroleum Consultants Ltd.
99.14	Consent of DeGolyer and MacNaughton.
99.15	Consent of Netherland, Sewell & Associates, Inc.

OFF-BALANCE SHEET ARRANGEMENTS

The Registrant does not have any off-balance sheet financing arrangements that have or are reasonably likely to have an effect on its

results of operations or financial condition.

TABULAR DISCLOSURE OF CONTRACTUAL OBLIGATIONS

The required disclosure is included under the heading “Contractual Obligations and Contingencies” in Appendix H to the Information Circular, incorporated by reference as Exhibit 99.1 in this Registration Statement on Form 40-F.

FORWARD LOOKING INFORMATION

The safe harbor provided in Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), applies to forward-looking information provided pursuant to “Off-Balance Sheet Arrangements” and “Tabular Disclosure of Contractual Obligations” in this Registration Statement on Form 40-F. See “Forward-Looking Statements” in the Information Circular filed as Exhibit 99.1 to this Registration Statement on Form 40-F.

COMPLIANCE WITH AUDITOR INDEPENDENCE AND RECONCILIATION REQUIREMENT

The Carve-Out Consolidated Financial Statements of Cenovus Energy as at December 31, 2008 and December 31, 2007 and for each of the years in the three year period ended December 31, 2008 filed as part of this Registration Statement on Form 40-F have been reconciled to U.S. GAAP. Such reconciliation is set forth as at December 31, 2008 and December 31, 2007 and for each of the years in the three year period ended December 31, 2008 in Appendix H to the Information Circular, attached hereto as Exhibit 99.1.

UNDERTAKING AND CONSENT TO SERVICE OF PROCESS

A. Undertaking

The Registrant undertakes to make available, in person or by telephone, representatives to respond to inquiries made by the Commission staff, and to furnish promptly, when requested to do so by the Commission staff, information relating to: the securities registered pursuant to Form 40-F; the securities in relation to which the obligation to file an annual report on Form 40-F arises; or transactions in said securities.

B. Consent to Service of Process

A Form F-X signed by the Registrant and its agent for service of process is being filed with the Commission together with this Registration Statement on Form 40-F.

Any change to the name or address of the agent for service of process of the Registrant shall be communicated promptly to the Commission by an amendment to the Form F-X referencing the file number of the relevant registration statement.

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 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: October 29, 2009	CENOVUS ENERGY INC.
	By:	/s/ Kerry D. Dyte
		Kerry D. Dyte
		Secretary