C
- (Province of Cagayan) Catugay
- (Province of Cagayan) Caroan
- (Province of Cagayan) Cama
- (Province of Cagayan) Callao Caves
- (Province of Cagayan) Casuco
- (Province of Cagayan) Camugon
- (Province of Cagayan) Cadaanan
- (Province of Cagayan) Cabuluan
- (Province of Cagayan) Caratacat
- (Province of Cagayan) Calintaan
- (Province of Cagayan) Catarauan
- (Province of Nueva Vizcaya) Cordon
- (Province of Nueva Vizcaya) Camamasi
- (Province of Quirino) Calaocan
- (Province of Nueva Vizcaya) Capisaan
- (Province of Nueva Vizcaya) Casignan
- (Province of Nueva Vizcaya) Capillao
- (Province of Nueva Vizcaya) Caloocan
- (Province of Nueva Vizcaya) Campo Gracia
- (Province of Nueva Vizcaya) Cabatuan
- (Province of Nueva Vizcaya) Carolotan
- (Province of Isabela) Camarao Old
- (Province of Isabela) Camarao New
- (Province of Isabela) Cakilingan
- (Province of Quirino) Campanito
- (Province of Nueva Vizcaya) Camambugan
- (Province of Nueva Vizcaya) Careb
- (Province of Nueva Vizcaya) Catarawan
- (Province of Nueva Vizcaya) Compra
- (Province of Nueva Vizcaya) Cabuluan