6-K

FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.   20549

Report of Foreign Private Issuer

Pursuant to Rule 13a - 16 or 15d - - 16 of

the Securities Exchange Act of 1934

For the month of: April 2007 Commission File Number: 1-12384

SUNCOR ENERGY INC.

(Name of registrant)

112 Fourth Avenue S.W.

P.O. Box 38

Calgary, Alberta

Canada, T2P 2V5

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F o Form 40-F x

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the SEC pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:

Yes o No x

If “Yes” is marked, indicate the number assigned to the registrant in connection with Rule 12g3-2(b):

N/A

EXHIBIT INDEX

Exhibit	Description of Exhibit
1	Notice of Change of Directors, dated April 26, 2007

2

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, thereunto duly authorized.

	SUNCOR ENERGY INC.
Date: April 26, 2007	By:
	“JANICE B. ODEGAARD”
	JANICE B. ODEGAARD
	Vice President, Associate
	General Counsel and
	Corporate Secretary

3

EX-1

CANADA BUSINESS CORPORATIONS ACT FORM 6 NOTICE OF DIRECTORS OR NOTICE OF CHANGE OF DIRECTORS LOI SUR LES SOCIÉTÉS COMMERCIALES CANADIENNES FORMULE 6 AVIS DES ADMINISTRATEURS OU AVIS DE CHANGEMENT DES ADMINISTRATEURS

1 - Name of Corporation - Dénomination de la société	2 - Corporation No. - No de la société
SUNCOR ENERGY INC.	241769-3

3 - The following persons became directors of this corporation:	Les personnes suivantes sont devenues administrateurs de la présente société:
Effective Date - Date d’entrée en vigueur — April 26, 2007

Name - Nom	Residential Address - Adresse résidentielle	Occupation	Citizenship Citoyenneté
NOT APPLICABLE

4 - The following persons ceased to be directors of this corporation:	Les personnes suivantes ont cessé d’être administrateurs de la présente société:
Effective Date - Date d’entrée en vigueur — April 26, 2007

Name - Nom	Residential Address - Adresse résidentielle
JR SHAW	900, 630 Third Avenue S.W, Calgary, Alberta, Canada, T2P 4L4

5 - The directors of this corporation now are: Les administrateurs de la présente société sont maintenant:

Name - Nom	Residential Address - Adresse résidentielle	Occupation	Citizenship Citoyenneté
See Schedule “A” attached hereto and forming a part hereof

Date	Signature	Description of Office - Description du poste
April 26, 2007	“JANICE B. ODEGAARD” JANICE B. ODEGAARD	Vice President, Associate General Counsel and Corporate Secretary

SCHEDULE “A” TO A NOTICE OF CHANGE OF DIRECTORS

OF SUNCOR ENERGY INC.

DATED THE 26TH DAY OF APRIL, 2007

5 - The directors of this corporation now are: Les administrateurs de la présente société sont maintenant:

Name - Nom	Residential Address - Adresse résidentielle	Occupation	Citizenship Citoyenneté
BENSON, Mel E.	315 Rodeo Ridge Calgary, Alberta Canada  T3Z 3G2	Management Consultant	Canadian
CANFIELD, Brian A.	289 Marine Drive,Box 1311 Point Roberts, Washington U.S.A.  98281	Executive	Canadian
DAVIES, Bryan P.	87 Old Mill Road Toronto, Ontario Canada  M8X 1G9	Corporate Director	Canadian
FELESKY, Brian A.	5000, 150 Sixth Avenue S.W. Calgary, Alberta Canada  T2P 3Y7	Lawyer	Canadian
FERGUSON, John T.	201, 11523 — 100 Avenue Edmonton, Alberta Canada  T5K 0J8	Executive	Canadian
FORD, W. Douglas	3654 Highland Avenue Dowers Grove, Illinois U.S.A.  60515-1547	Executive	American
GEORGE, Richard L.	112 Fourth Avenue S.W., Box 38 Calgary, Alberta Canada  T2P 2V5	Executive	Canadian/American
HUFF, John R.	11911 FM 529 Houston, Texas U.S.A.  TX 77041	Engineer	American
McCAIG, M. Ann	5909 Elbow Drive S.W. Calgary, Alberta Canada  T2V 1H7	Businesswoman	Canadian
O’BRIEN, Michael W.	Unit 33, 101 Armstrong Place Canmore, Alberta Canada  T1W 3M2	Corporate Director	Canadian
THOMAS, Eira M.	Suite 860, 625 Howe Street Vancouver, British Columbia Canada  V6C 2T6	Businesswoman	Canadian