Cities of United Kingdom starting with letter O Page 3
- Ombersley
- Ompton
- Onecote
- Onehouse
- Ongar
- Onibury
- Onllwyn
- Orby
- Orchard Park
- Orchard Portman
- Orcheston
- Orcop
- Ord
- Orford
- Orgreave
- Orgreave
- Orkney
- Orlestone
- Orleton
- Orleton
- Orlingbury
- Ormesby St. Margaret with Scratby
- Ormesby St. Michael
- Ormside
- Orston
- Orton
- Orton (Carlisle District)
- Orton (Kettering District)
- Orton Longueville
- Orton Waterville
- Orwell
- Osbaldeston
- Osbaldwick
- Osbaston
- Osbournby
- Osgathorpe
- Osgodby
- Osgodby (West Lindsey District)
- Osleston and Thurvaston
- Osmaston
- Osmington
- Osmotherley
- Osmotherley (Hambleton District)
- Ozleworth
- Ossington
- Oswaldkirk
- Oswestry
- Oswestry Rural
- Otford
- Otham