C
- (Kenai Peninsula Borough) Chiswell Islands
- (Kenai Peninsula Borough) Chiswell Island
- (Yukon-Koyukuk Census Area) Chokoyik Island
- (Kodiak Island Borough) Chowiet Island
- (Anchorage Municipality) Chugach Heights
- (Kenai Peninsula Borough) Chugach Islands
- (Kenai Peninsula Borough) Chugachik Island
- (Aleutians West Census Area) Chuginadak Island
- (Aleutians West Census Area) Chugul Island
- (Kusilvak Census Area) Chulloonawick
- (Yukon-Koyukuk Census Area) Circle Hot Springs Station
- (Kusilvak Census Area) Circle Island
- (Yukon-Koyukuk Census Area) Circle Island
- (Anchorage Municipality) City View
- (Sumter County) Clam Islands
- (Campbell County) Clay Island
- (Yukon-Koyukuk Census Area) Clay Island
- (Fairbanks North Star Borough) Clear Creek Park
- (Kodiak Island Borough) Cliff Island
- (Campbell County) Clifford Island
- (Kodiak Island Borough) Clover Rock
- (Campbell County) Clubbing Rocks
- (Yukon-Koyukuk Census Area) Coal Creek
- (Kenai Peninsula Borough) Cohen Island
- (Aleutians West Census Area) Cone Island
- (Yukon-Koyukuk Census Area) Cook Island
- (Lowndes County) Cooper Island
- (Aleutians West Census Area) Cormorant Island
- (Aleutians West Census Area) Corwin Rock
- (Lowndes County) Cottle Island