C
- (Province of Isabela) Capitan
- (Province of Isabela) Caperperiwan
- (Province of Isabela) Capenikian
- (Province of Cagayan) Capatan
- (Province of Cagayan) Capanniquian
- (Province of Cagayan) Capanikian
- (Province of Isabela) Capaltitan
- (Province of Isabela) Cabeseria Nueve y Once
- (Province of Cagayan) Capacuan
- (Province of Cagayan) Capacuan
- (Province of Isabela) Cauayan
- (Province of Isabela) Canzan
- (Province of Nueva Vizcaya) Canutuan
- (Province of Quirino) Cannuangan
- (Province of Isabela) Cañogan Abajo Norte
- (Province of Cagayan) Cannagan
- (Province of Cagayan) Canayon
- (Province of Isabela) Canangan
- (Province of Isabela) Canan
- (Province of Cagayan) Canagatan
- (Province of Isabela) Camutog
- (Province of Cagayan) Camugaoan
- (Province of Nueva Vizcaya) Camp Rosario
- (Province of Nueva Vizcaya) Campote
- (Province of Nueva Vizcaya) Campote
- (Province of Cagayan) Campo
- (Province of Cagayan) Campo
- (Province of Nueva Vizcaya) Camp Edralin
- (Province of Isabela) Camunatan
- (Province of Cagayan) Camiguin Island