| Abbreviation | Designation | |
|---|---|---|
| HL | Hauptluftleitung (German) | railway technology |
| HL | Lübeck Hbf, Hansestadt Lübeck (German) | fare point / vehicle registration plate |
| Hl | Horndal (Swedish) | station code |
| Hl | Halle (Saale) (1895–1994) (German) | railway administration |
| Hl / Hal | K.E.D. Halle (1897–), Königliche Eisenbahn-Direction Halle (German) | railway administration |