D
- (Province of Quirino) Dumabel
- (Province of Quirino) Del Pilar
- (Province of Quirino) Dungo
- (Province of Quirino) Divisoria
- (Province of Quirino) Dumabato Sur
- (Province of Quirino) Dumabato Norte
- (Province of Isabela) Dietban
- (Province of Isabela) Dipacamo
- (Province of Isabela) Dingading
- (Province of Isabela) Dicamay I
- (Province of Isabela) Dicamay II
- (Province of Isabela) Dumawing
- (Province of Isabela) Dipacamo
- (Province of Isabela) Dicaraywan
- (Province of Quirino) Diego Silang
- (Province of Quirino) Don Pedro
- (Province of Isabela) Divinan
- (Province of Isabela) Dagupan
- (Province of Isabela) Daga
- (Province of Isabela) Divisoria
- (Province of Isabela) Dabba
- (Province of Cagayan) Dalin
- (Province of Cagayan) Dalla
- (Province of Cagayan) Dasilig
- (Province of Cagayan) Dabba
- (Province of Cagayan) Divisoria
- (Province of Cagayan) Dafunganay
- (Province of Isabela) Dimapnat
- (Province of Isabela) Didadongan
- (Province of Isabela) Digollorin