From Ranochan, Inverness to all cities in Durham starting with letter O
- Oak Tree, Inverness
- Oakenshaw, Inverness
- Old Cassop, Inverness
- Old Durham, Inverness
- Old Eldon, Inverness
- Old Quarrington, Inverness
- Old Stillington, Inverness
- Old Thornley, Inverness
- Old Town, Inverness
- Old Wingate, Inverness
- Ornsby Hill, Inverness
- Ouston, Inverness
- Ovington, Inverness
- Owton Manor, Inverness
- Oxbridge, Inverness
- Oxhill, Inverness