Canadá

O

• (Dufferin County) Orton
• (Parry Sound District) Orrville
• (Regional Municipality of Waterloo) Orr's Lake
• (Simcoe County) Orr Lake
• (Simcoe County) Oro Station
• (Simcoe County) Oro
• (Hastings County) Ormsby
• (Elgin County) Ormond Beach
• (Outaouais) Orlo
• (Simcoe County) Orkney Beach
• (Oxford County) Oriel
• (Estrie) Orford Lake
• (Regional Municipality of Niagara) O'Reilly's Bridge
• (Grey County) Orchardville
• (Elgin County) Orchard Beach
• (Parry Sound District) Oranmore
• (Cochrane District) Opasatika
• (Outaouais) Onslow Corners
• (Frontenac County) Ompah
• (Estrie) Omerville
• (Wellington County) Olivet
• (Squamish-Lillooet Regional District) Oliver's Landing
• (County of Camrose No. 22) Ohaton
• (Renfrew County) O'Grady Settlement
• (Laurentides) Ogdensburg
• (Estrie) Ogden
• (Lennox and Addington County) Odessa
• (Frontenac County) Oconto
• (Thunder Bay District) O'Connor
• (Metro Vancouver Regional District) Ocean Park