C
- (Province of Isabela) Cabugao
- (Province of Cagayan) Centro
- (Province of Cagayan) Cabayu
- (Province of Cagayan) Cabatacon West
- (Province of Cagayan) Centro
- (Province of Cagayan) Capanickian Sur
- (Province of Cagayan) Centro Norte
- (Province of Cagayan) Centro Sur
- (Province of Cagayan) Casingsingan Sur
- (Province of Cagayan) Callao
- (Province of Cagayan) Caroan
- (Province of Cagayan) Centro Sur
- (Province of Cagayan) Calassitan
- (Province of Cagayan) Centro Norte
- (Province of Isabela) Centro
- (Province of Isabela) Calaocan
- (Province of Isabela) Calaocan
- (Province of Isabela) Cebu
- (Province of Isabela) Caipilan
- (Province of Isabela) Centro
- (Province of Isabela) Cabugao
- (Province of Isabela) Castillo
- (Province of Isabela) Campanario
- (Province of Isabela) Cabeseria Veinticinco
- (Province of Isabela) Cabeseria Diecinueve
- (Province of Isabela) Cabeseria Dos
- (Province of Isabela) Cabeseria Tres
- (Province of Isabela) Cabeseria Cuatro
- (Province of Isabela) Cabeseria Cinco
- (Province of Isabela) Cabeseria Seis y Veinticuatro