Miasta Wielka Brytania, począwszy od litery O Strona 5
- Over Silton
- Osmotherley (Hambleton District)
- Otterburn
- Ovington
- Ovingham
- Orcop
- Ocle Pychard
- Oundle
- Offley
- Overton (Basingstoke and Deane District)
- Owston
- Old Byland and Scawton
- Orgreave
- Osbaston
- Orleton
- Oksford
- Oakmere
- Ongar
- Oadby and Wigston
- Oakley
- Ocle Pychard
- Odell
- Ogmore and Garw
- Omagh District
- Orgreave
- Orkady (Scotland)
- Orleton
- Otterburn
- Ottringham
- Overton