- Cranberry Island
- Crane Island
- Crane Island
- Crane Island
- Crescent Beach
- Crescent Island
- Criehaven
- Cross Island
- Crotch Island
- Crotch Island
- Crow Island
- Curtis Island
- Cushing Island
- Cutters Nubble
- Cape Neddick
- Caratunk
- Caribou
- Casco
- Castine
- Caldwell Corner
- Canton Point
- Center Lovell
- Chambers Corner
- Cobb Cove
- Coos Canyon
- Crescent Island
- Chapman
- Carr Corner
- Chokecherry Island
- Coburn