City with O
- Orlando
- Oslo
- Ottawa
- Oakland
- Osaka
- Omaha
- Oxford
- Orleans
- Olympia
- Oldenburg
- OOty
- Ocean City
- Odessa
- Oberhausen
- Oshawa
- Ogden
- Okinawa
- Oaxaca
- Oregon City
- Omsk
- Oran
- Oviedo
- Oswego
- Oakville
- Oceanside
- Ouagadougou
- Offenbach
- Oklahoma City
- Orange City
- Ohio City
- Oxnard
- Oshkosh
- Ocala
- Orillia
- Odisha
- Oberlin
- Oakdale
- Oneonta
- Oahu
- Ozark
- Orem
- ONTARIO
- otwock
- Oneida
- Oporto
- Olivia
- Oliver
- Okayama
- Oban
- Owen sound
- Oakley
- Oconomowoc
- Orlando Florida
- Oroville
- Ostia
- oak park
- Okanagan
- Overton
- Orly
- Oscar
- Omar
- Orono
- Old Town
- OHIO
- Owensboro
- Olney
- Oswald
- Otago
- Onalaska
- Oceana
- Osceola
- Odesa
- Omdurman
- ohayo
- ostrawa
- OKLAHOMA
- Orange Beach
- Obama
- Oralando
- Oranjestad
- Owatonna
- Othello
- Overland Park
- Orania
- Orland Park
- oak bay
- Oleśnica
- Opelika
- Ostrów Wielkopolski
- Ormond Beach
- oasis
- Okla
- Omagh
- Oval
- outer banks
- Occidental
- oak hills
- Onslow
- orla
- o city
The words in the list City with O come from players of the word game City, Country, River.