Oakburn - Oakville - Oak-Bay - Oak-Lake - Oak-Point - Oba - Oban - Obed - Obiduan - Obijuan - Obrian-Bay - Obrien - Ocean-Falls - Ocean-View - Ochiltree - Ochre-River - Oderin - Ogema - Ogilvie - Ogoki - Oka - Okanagan - Okanagan-Landing - Okanogan - Okotoks - Olds - Old-Bridgeport - Old-Chelsea - Old-Crow - Old-Factory - Old-Factory-River - Old-Fort - Old-Fort-Bay - Old-Hogem - Old-Perlican - Old-Wives - Oleary - Oliver - Omemee - Omerville - Ompah - Onefour - One-Hundred-Fifty-Mile-House - One-Hundred-Mile-House - Onion-Lake - Onoway - Oona-River - Ootischenia - Ootsa-Lake - Opasatika - Opasquia - Opastika - Open-Hall - Open-Hole - Orangedale - Orangeville - Ordale - Orient-Bay - Orillia - Orleans - Ormstown - Oromocto - Oronocto - Orrville - Orsainville - Osborne - Oshawa - Oskelaneo - Osland - Osnaburgh - Osnaburgh-House - Osoyoos - Otis - Ottawa - Otter - Otterburne - Otterburn-Park - Otter-Creek - Otter-Lake - Ouimet - Oungre - Outlook - Outram-Station - Outremont - Overton - Owen-Sound - Owlseye - Owlseye-Lake - Owl-River - Oxbow - Oxdrift - Oxford - Oxford-House - Oxford-Junction - Oyama -