| SUNCOR ENERGY UK HOLDINGS LTD | - | | - | |
| Suncor Energy Marketing Inc. | - | | - | |
| SUNCOR ENERGY GERMANY GMBH | - | | | |
| SUNCOR ENERGY NETHERLANDS INVESTMENT B.V. | - | | | |
| Portland Pipe Line | 100.00 | - | - | |
| SUNCOR ENERGY (INTERNATIONAL) HOLDINGS B.V. | - | | | |
| Syncrude Canada | 58.74 | - | - | |
| SUNCOR ENERGY SERVICES INC. | - | | - | |
| SUNCOR ENERGY LIBYA EXPLORATION B.V. | - | | - | |
| PETRO-CANADA NORWAY INVESTMENT LIMITED | - | | - | |
| SUNCOR ENERGY (U.S. FINCO) B.V. | - | | | |
| EQUINOR WOS LIMITED | - | | - | |
| SUNCOR ENERGY COÖPERATIEF HOLDING U.A. | - | | - | |
| SUNCOR ENERGY OIL SANDS LIMITED PARTNERSHIP | - | | - | |
| SUNCOR ENERGY (U.S.A.) INC. | - | | - | |
| SUNCOR ENERGY TREASURY SERVICES LIMITED | - | | - | |
| SUNCOR ENERGY INTERNATIONAL HOLDINGS INC. | - | | - | |
| SUNCOR ENERGY INTERNATIONAL TRADING LIMITED | - | | | |
| SUNCOR ENERGY OIL (NORTH AFRICA) GMBH | - | | | |
