Dahl may refer to:
- Dahl (surname)
- Dal or dahl, a dish or preparation of lentils or other pulses
In German places:
- Hagen-Dahl, Hagen, Ruhrgebiet
- Kürten-Dahl, Kürten, Rheinisch-Bergischer Kreis
- Marienheide-Dahl, Marienheide, Oberbergischer Kreis
- Mönchengladbach-Dahl, Mönchengladbach
- Dahl, a location in Olpe, Germany
- Paderborn-Dahl, Paderborn
- Dahl, Solingen
- Waldbröl-Dahl, Waldbröl, Oberbergischer Kreis
- Dahl, Wiehl, Oberbergischer Kreis
- Dahl, Wipperfürth, Oberbergischer Kreis
In Luxembourg:
- Dahl (Luxembourg), a village in the commune of Goesdorf
In fiction:
- Dahl is a sector of the fictional planet Trantor
- Dahl is a weapons manufacturer in the game Borderlands