| Abbreviation | Designation | |
|---|---|---|
| ÖR / ØR | Öresundståg, Öresundståg AB (Swedish) Oresundtrain | railway company |
| ØR / RØ / RV | regionaltog (Danish) | train category |
| OR | Oranienburg (German) | fare point / vehicle registration plate |
| Or | Olskroken (Swedish) | station code |
| Ör | Örebro C, Örebro central (Swedish) | station code |