6L or 6-L can refer to:

6L, or British Rail Class 202 IATA code for Aklak Air Typ 6L, a model of SEAT Ibiza Typ 6L, a model of SEAT Córdoba Model R-6L, a model of Curtiss Model R TAF6L 6L, a model of HP LaserJet 6 6L, the production code for the 1984 Doctor Who serial Warriors of the Deep

See also L6 (disambiguation)