From Snape, North Yorkshire to all cities in Essex starting with letter O
- Oak Corner, North Yorkshire
- Oaker Hill, North Yorkshire
- Old Harlow, North Yorkshire
- Old Heath, North Yorkshire
- Old Mead, North Yorkshire
- Olmstead Green, North Yorkshire
- Onslow Green, North Yorkshire
- Orsett, North Yorkshire
- Orsett Heath, North Yorkshire
- Osea Island, North Yorkshire
- Ost End, North Yorkshire
- Ostend, North Yorkshire
- Ovington, North Yorkshire
- Oxen End, North Yorkshire
- Oxley Green, North Yorkshire