Stations starting with O
| Station | Operated by | TOD |
|---|---|---|
| Oakengates | WM | Yes |
| Oakham | Eurolines | Yes |
| Oakleigh Park | Great Northern | Yes |
| Oban | ScotRail | Yes |
| Ockendon | c2c | Yes |
| Ockley | Southern | Yes |
| Okehampton | GWR | Yes |
| Old Hill | WM | Yes |
| Old Roan | Merseyrail | Yes |
| Old Street | London Underground | No |
| Olton | WM | Yes |
| Ore | Southern | Yes |
| Ormskirk | Merseyrail | Yes |
| Orpington | Southeastern | Yes |
| Orrell | Northern Rail | No |
| Orrell Park | Merseyrail | Yes |
| Otford | Southeastern | Yes |
| Oulton Broad North | Abellio Greater Anglia | Yes |
| Oulton Broad South | Abellio Greater Anglia | Yes |
| Outwood | Northern Rail | Yes |
| Overpool | Merseyrail | Yes |
| Oxenholme Lake District | Avanti West Coast | Yes |
| Oxford Parkway | Chiltern Railways | Yes |
| Oxshott | South Western Railway | Yes |