- Oak Hill
- Oaken
- Oakenshaw
- Oakenshaw
- Oaker
- Oakhanger
- Oakhanger
- Oaklands
- Oakley
- Oakley
- Oakley Green
- Oakridge Lynch
- Oaks Green
- Oakthorpe
- Oakwood
- Oasby
- Ockbrook
- Offerton
- Offham
- Offleyhay
- Offord D’Arcy
- Ogbourne Maizey
- Ogden
- Ogle
- Okeford Fitzpaine
- Okewood Hill
- Old Alresford
- Old Basing
- Old Beetley
- Old Bilton