City or town with O
- Orlando
- Oslo
- Ottawa
- Oakland
- Oxford
- Omaha
- Osaka
- Olympia
- Oldenburg
- Orleans
- Oklahoma city
- Oakville
- Oldham
- Oshawa
- Ocean City
- Okinawa
- Oswego
- Odessa
- Oviedo
- Oaxaca
- Ogden
- Oceanside
- Orville
- Oberhausen
- OMAN
- Orillia
- Odisha
- ostrava
- Oregon City
- Oban
- Ocala
- Oswestry
- Ozark
- Oroville
- Oberlin
- Oshkosh
- Oneonta
- Omsk
- Ouagadougou
- Orange City
- Offenbach
- Oran
- Orangeburg
- Oakdale
- Offaly
- Orono
- Ormskirk
- Oamaru
- Olney
- Olathe
- OREGON
- Opal
- Ossining
- Orlando Florida
- Oneida
- Oak Park
- oakwood
- Opelika
- Oconomowoc
- Orion
- Owen sound
- Overton
- Owatonna
- Owensboro
- Oahu
- Outer Banks
- Overland Park
- olbia
- Owen
- organ
- ottwa
- Orania
- Oak Creek
- Old Bridge
- Oceana
- Oswald
- Osborne
- ONTARIO
- Omen
- Olovo
- Ocean
- ommen
- oyster bay
- Okehampton
- Olean
- Olivia
- Otorohanga
- Ostia
- Olive
- Oberon
- Orinda
- Otsego
- Oakleigh
- orange country
- open
- Orizaba
- ottoman
- Outback
- Old town road
- Otley
The words in the list City or town with O come from players of the word game City, Country, River.