| Abbreviation | Designation | |
|---|---|---|
| Sp | Spěšný vlak (Czech) Express | train category |
| Sp | Sparreholm (Swedish) | station code |
| SP | Sparpreis (German) Saver fare | rate for rail travel / ticket |
| SP | DB Service Point (German) | rate for rail travel / ticket |
| SP | Southern Pacific Transportation | railway company |