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 1 2 3