Irlanda
Países do mundo
O
- (County Monaghan) Ouvry Cross Roads
- (An Cabhán) Ouley
- (County Donegal) Owenea Bridge
- (County Donegal) Old Mountain
- (County Donegal) Old Town
- (County Donegal) Oldtown
- (County Cork) Old Chapel Cross Roads
- (Kerry) O’Connell Bridge
- (Kerry) Ownagarry Bridge
- (Kerry) Owgarrif Bridge
- (County Carlow) Oldtown
- (Sligo) Ogham
- (Sligo) Old Town
- (County Tipperary) Oakhampton
- (County Cork) O'Callagha Park
- (Meath) Otterstown
- (Meath) Oakstown
- (Meath) Oldtown
- (Meath) Ongenstown
- (Meath) Oldtown
- (Meath) Odder
- (Westmeath) Oldtown
- (Wexford) Our Lady's Island
- (Mayo County) Oughtagh
- (Dún Laoghaire-Rathdown) Old Connaught
- (Wicklow) Oldboleys
- (Kildare) Oldtowndonore
- (Kildare) O’Neill’s Cross Roads
- (Kildare) Oakfield
- (Kildare) Oghill Bridge