- Cabbage Island
- Cain Crest Trailer Park
- Calais
- Calderwood Island
- Calderwood Neck
- Caldwell Corner
- Caldwell Island
- Calf Island
- Calf Island
- Calf Island
- Calf Island
- California
- Cambridge
- Camden
- Camp Cove Ledge
- Camp Ellis
- Camp Island
- Camp Wavus
- Campbell
- Campbell Island
- Campbell Island
- Canaan
- Canton
- Canton Point
- Cape Cottage
- Cape Elizabeth
- Cape Island
- Cape Island
- Cape Neddick
- Cape Neddick Nubble