| Abbreviation | Designation | |
|---|---|---|
| BSL | Bahnstromleitung (German) | railway installation |
| BSL | Bereitstellungsleitung (German) Train provision control centre | rail transport operations |
| LFSB / BSL | EuroAirport Basel Mulhouse Freiburg (France) | ICAO/IATA airport code |
| Bsl | K.E.D. Breslau (1884–1918), Königliche Eisenbahn-Direction Breslau (German) | railway administration |
| Bsl | Rbd Breslau / RBD Breslau (1922–1937–1945), Reichsbahndirektion Breslau (German) Rbd Wroclaw / RBD Wroclaw | railway administration |