Sitemap by letter "O"
- Oak Bay, Quebec
- Oak Bay, British Columbia
- Oak Bay, New Brunswick
- Oakburn, Manitoba
- Oakdale No. 320, Saskatchewan
- Oak Lake, Manitoba
- Oakland, Ontario
- Oakland-Wawanesa, Manitoba
- Oak Point, New Brunswick
- Oak Point, Manitoba
- Oakview, Manitoba
- Oakville, Manitoba
- Oakville, Ontario
- Oasis, British Columbia
- Oba, Ontario
- Oban, Saskatchewan
- Oban, Nova Scotia
- Obed, Alberta
- Obedjiwan, Quebec
- O'Brien, Ontario
- Ocean Falls, British Columbia
- Ochiltree, British Columbia
- Ochre River, Manitoba
- O'Connor, Ontario
- Odanak, Quebec
- Odell, New Brunswick
- Oderin, Newfoundland and Labrador
- Odessa, Ontario
- Odessa, Saskatchewan
- Ogden, Quebec
- Ogema, Saskatchewan
- Ogilvie, Yukon
- Ogoki, Ontario
- Ohaton, Alberta
- Ohsweken, Ontario
- Oil City, Ontario
- Oil Springs, Ontario
- Oka, Quebec
- Okanagan Landing, British Columbia
- Okla, Saskatchewan
- Okotoks, Alberta
- Olalla, British Columbia
- Old Chelsea, Quebec
- Old Crow, Yukon
- Old Fort, British Columbia
- Old Fort Bay, Quebec
- Old-Harry, Quebec
- Old Hogem, British Columbia
- Old Perlican, Newfoundland and Labrador
- Old Post No. 43, Saskatchewan
- Olds, Alberta
- Old Wives, Saskatchewan
- O'Leary, Prince Edward Island
- Oliver, British Columbia
- Oliver Paipoonge, Ontario
- Oliver Siding, New Brunswick
- Olscamps, Quebec
- Omemee, Ontario
- Omerville, Quebec
- Ompah, Ontario
- Onefour, Alberta
- One Hundred Fifty Mile House, British Columbia
- One Hundred Mile House, British Columbia
- Onion Lake, Saskatchewan
- Onondaga, Ontario
- Onoway, Alberta
- Oona River, British Columbia
- Ootischenia, British Columbia
- Ootsa Lake, British Columbia
- Opasatika, Ontario
- Opasquia, Ontario
- Open Hall, Newfoundland and Labrador
- Orangedale, Nova Scotia
- Orangeville, Ontario
- Ordale, Saskatchewan
- Orient Bay, Ontario
- Orillia, Ontario
- Orkney No. 244, Saskatchewan
- Orleans, Ontario
- Ormiston, Saskatchewan
- Ormstown, Quebec
- Oro-Medonte, Ontario
- Oromocto, New Brunswick
- Orono, Ontario
- Orsainville, Quebec
- Orton, Alberta
- Orton, Ontario
- Ortonville, New Brunswick
- Osage, Saskatchewan
- Osborne, Manitoba
- Osgoode, Ontario
- Oshawa, Ontario
- Oskélanéo, Quebec
- Osland, British Columbia
- Osler, Saskatchewan
- Osnaburgh House, Ontario
- Osoyoos, British Columbia
- Otis, New Brunswick
- Otonabee-South Monaghan, Ontario
- Ottawa, Ontario
- Ottawa Brook, Nova Scotia
- Otter, Quebec
- Otterburne, Manitoba
- Otterburn Park, Quebec
- Otter Creek, Ontario
- Otter Lake, Quebec
- Otter Lake, Ontario
- Otterville, Ontario
- Otthon, Saskatchewan
- Ouimet, Ontario
- Oujé-Bougoumou, Quebec
- Oungah, Ontario
- Oungre, Saskatchewan
- Outlook, Saskatchewan
- Outram Station, Saskatchewan
- Outremont, Quebec
- Ouvry, Ontario
- Overton, Nova Scotia
- Owen Sound, Ontario
- Owl River, Alberta
- Owlseye, Alberta
- Owl's Head Harbour, Nova Scotia
- Oxbow, New Brunswick
- Oxbow, Saskatchewan
- Oxdrift, Ontario
- Oxford, Nova Scotia
- Oxford House, Manitoba
- Oxford Junction, Nova Scotia
- Oxford Mills, Ontario
- Oyama, British Columbia
- Oyen, Alberta
- Oyster Bed Bridge, Prince Edward Island
- Ozanam, Quebec