Canada
Countries of the world
C
- (District Municipality of Muskoka) Castle Island
- (Regional District of Mount Waddington) Care Island
- (Sunshine Coast Regional District) Captain Island
- (Regional District of Alberni-Clayoquot) Capstan Island
- (Central Coast Regional District) Canso Island
- (Regional District of Mount Waddington) Canoe Islets
- (Cowichan Valley Regional District) Canoe Islet
- (Regional District of Alberni-Clayoquot) Canoe Island
- (Charlotte County) Cannonball Island
- (Regional District of Fraser-Fort George) Campbell Island
- (Central Coast Regional District) Camel Island
- (Regional District of Alberni-Clayoquot) Camblain Island
- (Central Coast Regional District) Calvert Island
- (Regional District of Kitimat-Stikine) Campania Island
- (Cochrane District) Camp Island
- (Sunshine Coast Regional District) Calder Island
- (Skeena-Queen Charlotte Regional District) Cadman Island
- (Capital Regional District) Cabbage Island