Filipinas
Países do mundo
O
- (Province of Zambales) Olóngapo
- (Province of Leyte) Ormoc
- (Province of Misamis Occidental) Ozamiz City
- Ozamis
- (Province of Bulacan) Obando
- (Province of Bataan) Orion
- (Province of Bataan) Orani
- Oroquieta
- (Province of Iloilo) Oton
- (Province of Cebu) Ocaña
- (Province of Eastern Samar) Oras
- (Province of Zamboanga del Norte) Olingan
- (Province of Zamboanga Sibugay) Olutanga
- (Province of Negros Occidental) Orong
- (Province of Romblon) Odiongan
- (Province of Cebu) Obong
- (Province of Palawan) Osmeña
- (Province of Negros Occidental) Odiong
- (Province of Misamis Oriental) Odiongan
- (Province of Cebu) Oslob
- (Province of Misamis Oriental) Opol
- (Province of Negros Oriental) Okiot
- (Oriental Mindoro) Odiong
- (Cotabato) Osias
- (Province of Cebu) Owak
- (Province of Cebu) Ocoy
- Okoy
- (Occidental Mindoro) Odala
- (Province of Sorsogon) Ogod
- (Province of Masbate) Osmeña