C
- (Province of Nueva Vizcaya) Caldaan
- (Province of Nueva Vizcaya) Capiddigan
- (Province of Nueva Vizcaya) Concepcion
- (Province of Nueva Vizcaya) Canili
- (Province of Nueva Vizcaya) Cabayo
- (Province of Nueva Vizcaya) Castillo Village
- (Province of Cagayan) Casuriawan
- (Province of Cagayan) Catulayan
- (Province of Cagayan) Casayan
- (Province of Cagayan) Caniwaan
- (Province of Cagayan) Cababaan
- (Province of Cagayan) Casaluran
- (Province of Cagayan) Cadatan
- (Province of Isabela) Cumpra
- (Province of Isabela) Cassap Fuera
- (Province of Cagayan) Camasi
- (Province of Cagayan) Caritan Norte
- (Province of Cagayan) Capalalian
- (Province of Cagayan) Calog Sur
- (Province of Cagayan) Curva
- (Province of Cagayan) Centro Primero
- (Province of Cagayan) Centro Segundo
- (Province of Cagayan) Centro Primero
- (Province of Cagayan) Centro Segundo
- (Province of Cagayan) Centro Sexto
- (Province of Cagayan) Centro Cuarto
- (Province of Isabela) Canangan
- (Province of Isabela) Cutog Grande
- (Province of Isabela) Catalina
- (Province of Isabela) Casalatan