Cities where you can find Petro-Canada branches
- Garibaldi Highlands (2)
- Gaspé (3)
- Gatineau (9)
- Geary (1)
- Georgetown (2)
- Gibbons (1)
- Gibsons (1)
- Girardville (1)
- Glace Bay (1)
- Gloucester (5)
- Golden (2)
- Gormley (2)
- Granby (2)
- Grand Forks (1)
- Grande Prairie (4)
- Grande-Rivière (1)
- Grande-Valée (1)
- Grassland (1)
- Grasswood (1)
- Gravenhurst (3)
- Grimsby (1)
- Grimshaw (1)
- Griswold (1)
- Grunthal (1)
- Guelph (7)