The abbreviation RSL stands for:
- Axle load, axle load, see
- The official term for secondary school teachers in some German Länder
- Reinforced Shuttlecocks Limited, a British manufacturer of shuttlecocks
- Rostock street light, a street lamp commonly used in the GDR
- Red Star Leipzig, Leipzig, a sports club.
- Reserve static line lanyard, a rope to automatically activate the reserve parachute skydiving with separated main screen, see Parachute
- Restricted Substances List, Restricted Substances List, see REACH. This list was created to provide manufacturers with a list of prohibited substances in the hand, so that this is taken into account in the preparation of their finished toys, textiles, clothing and footwear.
RSL as distinguishing signs on license plate:
- Germany: county-level city of Dessau