City or town with O
- City in Florida, USA, known for theme parks 
- Capital city of Norway 
- Capital city of Canada 
- City in California, USA 
- Historic university city in England, UK 
- Capital city of Oklahoma, USA 
- Major city in Japan 
- City in Nebraska, USA 
- Capital city of Washington State, USA 
- City in Lower Saxony, Germany 
- Resort town in Maryland, USA 
- City in France (Orléans), known on the Loire. 
- Town in Ontario, Canada; a real place. 
- City in Ontario, Canada; on Lake Ontario. 
- Town in Greater Manchester, England, UK. 
- Okinawa City in Japan; also the island/prefecture. 
- Port city in Ukraine; English name widely used. 
- City name in USA and Australia, like Orange, CA. 
- City in Oregon, USA; famous end of Oregon Trail. 
- City in Asturias, Spain; also one in Florida. 
- Oswego
- Oaxaca
- Oberhausen
- Orillia
- Oceanside
- Ogden
- Oban
- Orville
- Odisha
- Oshkosh
- Orange City
- Ozark
- Oswestry
- Ouagadougou
- Ocala
- Oran
- Offenbach
- Oroville
- Orangeburg
- Omsk
- Oneonta
- Olney
- Opal
- Oamaru
- Oakdale
- Ormskirk
- organ
- Opelika
- Oberlin
- oakwood
- Owen sound
- Overton
- Orono
- Overland Park
- Ossining
- Omen
- Oak Park
- Oahu
- Owatonna
- Oneida
- Olathe
- Oconomowoc
- Ocean
- Owensboro
- Orion
- Orania
- Olive
- oyster bay
- Owen
- Otsego
- Otorohanga
- Ostia
- Orinda
- Olivia
- Olean
- Offaly
- Oberon
- orange country
- Opotiki
- open
- Old town road
- Old Bridge
- Ohakune
- Odesa
- Oceana
- oak grove
- Oak Creek
Οι λέξεις στη λίστα City or town with O προέρχονται από παίκτες του λεκτικού παιχνιδιού Όνομα, Ζώο, Πράγμα.