- Cabalian
- Cabankauan Island
- Cabuan
- Cabucan
- Cabucan Island
- Cabugao
- Cacar
- Cadingilan
- Cadinguiban
- Caduayan
- Cadung
- Cagayan Sulu Islands
- Cairon
- Cal-loan Diki Island
- Cal-loan Island
- Calaitan Island
- Calaitan Islets
- Calalanuan
- Calang
- Calavario
- Calimbato
- Caling
- Calocan
- Caloo
- Calucan
- Caluman Islands
- Calungan
- Camabalan Island
- Camalig
- Cambug