From Hanging Chadder, Greater Manchester to all cities in Devon starting with letter O
- Oak Cross, Greater Manchester
- Oakford, Greater Manchester
- Oakfordbridge, Greater Manchester
- Odam Barton, Greater Manchester
- Odham, Greater Manchester
- Offwell, Greater Manchester
- Okehampton, Greater Manchester
- Olchard, Greater Manchester
- Old Beat, Greater Manchester
- Oldborough, Greater Manchester
- Oldways End, Greater Manchester
- Orchard Hill, Greater Manchester
- Oreston, Greater Manchester
- Ossaborough, Greater Manchester
- Otterton, Greater Manchester
- Ottery St Mary, Greater Manchester
- Outer Hope, Greater Manchester