- Cleft Island
- Cliff Island
- Clifford Island
- Clover Island
- Clover Pass
- Clover Rock
- Cloverleaf Island
- Clubbing Rocks
- Clump Island
- Clump Island
- Coal
- Coal Creek
- Cob Island
- Cobb Island
- Cobol
- Coffee Creek
- Coffman Cove
- Coffman Island
- Coghlan Island
- Cohen Island
- Cohen Island
- Cohoe
- Cold Bay
- Coldfoot
- Cole Island
- College
- Colorado
- Colt Island
- Column Rocks
- Comet