D
- (Province of Cagayan) Dayun
- (Province of Isabela) Duroc
- (Province of Nueva Vizcaya) Duria
- (Province of Nueva Vizcaya) Dupax del Sur
- (Province of Nueva Vizcaya) Dupax Del Norte
- (Province of Isabela) Dunsub
- (Province of Cagayan) Dunggan
- (Province of Cagayan) Dungao
- (Province of Cagayan) Dungao
- (Province of Cagayan) Dumpao
- (Province of Cagayan) Dummun
- (Province of Cagayan) Duminit
- (Province of Isabela) Duminit
- (Province of Quirino) Duminamad
- (Province of Nueva Vizcaya) Dumayop
- (Province of Cagayan) Dugo
- (Province of Cagayan) Duggil
- (Province of Cagayan) Dugayung
- (Province of Isabela) Dugayong
- (Province of Cagayan) Duducan
- (Province of Cagayan) Ducan
- (Province of Nueva Vizcaya) Ducait
- (Province of Cagayan) Doublon
- (Province of Isabela) Dubinan
- (Province of Quirino) Drub
- (Province of Cagayan) Dos Hermanas Islands
- (Province of Nueva Vizcaya) Dongayap
- (Province of Nueva Vizcaya) Dumang
- (Province of Isabela) Dolores
- (Province of Nueva Vizcaya) Dolle