O
O'Connor, OntarioO'Leary, Prince Edward IslandOak Bay, British ColumbiaOak Bluff, ManitobaOak Lake, ManitobaOak Ridges, OntarioOakbank, ManitobaOakville, OntarioOban, SaskatchewanObedjiwan, QuebecOcean Falls, British ColumbiaOdessa, SaskatchewanOgden, QuebecOgema, SaskatchewanOhaton, AlbertaOhsweken, OntarioOil Springs, OntarioOka, QuebecOkanagan, British ColumbiaOkanagan Centre, British ColumbiaOkanagan Falls, British ColumbiaOkotoks, AlbertaOld Crow, Yukon TerritoryOld Perlican, Newfoundland and LabradorOld Stittsville, OntarioOld Wives, SaskatchewanOlds, AlbertaOliver, British ColumbiaOmemee, OntarioOnaping Falls, OntarioOnoway, AlbertaOpasatika, OntarioOrangeville, OntarioOrillia, OntarioOrkney, SaskatchewanOrleans, OntarioOrmstown, QuebecOromocto, New BrunswickOrono, OntarioOrtonville, New BrunswickOsgoode, OntarioOshawa, OntarioOsler, SaskatchewanOsoyoos, British ColumbiaOttawa, OntarioOttawa East, OntarioOttawa South, OntarioOtterburn Park, QuebecOttman - Murray Beach, SaskatchewanOutlook, SaskatchewanOutram, SaskatchewanOwen Sound, OntarioOxarat, SaskatchewanOxbow, SaskatchewanOxford, Nova ScotiaOxford House, ManitobaOyama, British ColumbiaOyster River, British Columbia
