Canada

O

• (Estrie) Oliver Corner
• (Oxford County) Oliver
• (Northern Rockies Regional Municipality) Old Fort Nelson
• (Bruce County) Old Woman's River
• (Outaouais) Old Chelsea
• (Ottawa) Old Stittsville
• (Laurentides) Oka-sur-la-Montagne
• (Skeena-Queen Charlotte Regional District) Old Massett
• (Regional District of Central Okanagan) Okanagan Mission
• (Gaspésie-Îles-de-la-Madeleine) Old-Harry
• (Regional District of Central Okanagan) Okanagan Centre
• (Parry Sound District) Ojibway Island
• (Lambton County) Oakdale
• (Metro Vancouver Regional District) Oakridge
• (United Counties of Leeds and Grenville) Oak Leaf
• (Brant) Oakland
• (Lunenburg County) Oakland
• (Peterborough County) Oak Lake
• (Central Coast Regional District) Ocean Falls
• (Thompson-Nicola Regional District) Oak Hills
• (Mauricie) Obedjiwan
• (Abitibi-Témiscamingue) Obaska
• (Northumberland County) Oak Heights
• (Nord-du-Québec) Obalski
• (Charlotte County) Oak Haven
• (Renfrew County) Oakgrove
• (Frontenac County) Oak Flats
• (Skeena-Queen Charlotte Regional District) Osborne Islands
• (Strathcona Regional District) Okis Islands
• (Strathcona Regional District) Octopus Islands