C
- (Province of Tarlac) Catanglaran
- (Province of Nueva Ecija) Catambuan
- (Province of Nueva Ecija) Catalanacan
- (Province of Tarlac) Catagudingan
- (Province of Nueva Ecija) Casongsong
- (Province of Nueva Ecija) Casulucan
- (Province of Pampanga) Castuli
- (Province of Nueva Ecija) Castellano
- (Province of Tarlac) Casipo
- (Province of Tarlac) Casile
- (Province of Nueva Ecija) Casile
- (Province of Aurora) Casiguran
- (Province of Aurora) Casiguran
- (Province of Nueva Ecija) Casanova Sur
- (Province of Nueva Ecija) Casanova Norte
- (Province of Bataan) Casamluan
- (Province of Zambales) Carusipan
- (Province of Nueva Ecija) Carosalisan
- (Province of Tarlac) Cariño
- (Province of Nueva Ecija) Caridad Norte
- (Province of Nueva Ecija) Cardinal
- (Province of Tarlac) Carbonel
- (Province of Tarlac) Carapdapan
- (Province of Tarlac) Carangian
- (Province of Tarlac) Caramutan
- (Province of Zambales) Caragay
- (Province of Tarlac) Carael
- (Province of Tarlac) Carabaoan
- (Province of Bataan) Capot
- (Province of Zambales) Capon Grande