Filipinas
Países del mundo
O
- (Dinagat Islands) Odok
- (Province of Tarlac) O’Donnell
- (Oriental Mindoro) Oem
- (Province of Samar) Oeste - A
- (Province of Catanduanes) Oga
- (Province of Sorsogon) Ogao
- (Province of Marinduque) Ogbac
- (Province of Camarines Sur) Ogbon
- (Province of Catanduanes) Ogbong
- (Province of Misamis Oriental) Ognas
- (Province of Palawan) Ocam Ocam
- (Province of Bukidnon) Ocasion
- (Province of Samar) Occidental
- (Province of Camarines Sur) Ocini
- (Province of Catanduanes) Oco
- (Province of Pangasinan) Oda
- (Davao Occidental) Odalo
- (Bohol) Odiong
- (Bohol) Odiong
- (Bohol) Odiong
- (Province of Southern Leyte) Odiong
- (Province of Antique) Odiong
- (Oriental Mindoro) Odiong
- (Province of Palawan) Olasi
- (Province of Siquijor) Olave
- (Province of Negros Oriental) Olay
- (Province of Samar) Olayan
- (Davao de Oro) Olayon
- (Province of La Union) Old Central
- (Province of Agusan del Sur) Old Clavijo