L20

L20, L-20 or L.20 may refer to:

• L20, a Royal Navy World War I submarine
• L20, the Federal Aviation Administration identifier of Coal Creek Airport, Alaska
• L20, a Soviet Leninets-class submarine
• L.20, a German naval Zeppelin of World War I
• L20, a World War II, US Navy L-class blimp
• L20 is the United Kingdom postcode for the town of Bootle
• L-20 Beaver, single-engined utility aircraft
• L 20e α, proposed World War I German battleship class
• Lectionary ℓ 20, a Greek manuscript of the New Testament, dated 1047
• Nikon CoolPix L20, one of the Nikon Coolpix series of cameras
• An L-series Nissan engine, e.g. L20, L20A, L20B, etc.
• L2O, Chicago restaurant