O
- (Province of Negros Oriental) Owacan
- (Bohol) Owac
- (Province of Cebu) Oro
- (Province of Cebu) Opaw
- (Province of Cebu) Opao
- (Province of Cebu) Opao
- (Province of Cebu) Opao
- (Province of Negros Oriental) Opao
- (Bohol) Onom
- (Bohol) Ongo
- (Province of Cebu) Ongca
- (Bohol) Ondol
- (Bohol) Ondol
- (Province of Negros Oriental) Omod
- (Bohol) Omjon
- (Province of Negros Oriental) Omauas
- (Province of Cebu) Omapad
- (Province of Negros Oriental) Olympia Island
- (Province of Siquijor) Olo
- (Province of Negros Oriental) Olimpia
- (Province of Cebu) Ocoy
- (Province of Cebu) Owak
- (Province of Negros Oriental) Okiot
- (Province of Cebu) Oslob
- (Province of Cebu) Obong
- (Province of Cebu) Ocaña