L19, L-19 or L.19 may refer to: * HMS L19, a Royal Navy World War 1 submarine * L19, the Federal Aviation Administration identifier of Wasco Airport, California * L19, a Soviet Leninets class submarine * L.19, a German naval Zeppelin of the World War 1 * L19, a World War 2, US Navy L class blimp * L19 is the United Kingdom postcode for part of the city of Liverpool * L-19 Bird Dog, American, military liaison and observation aircraft * Lectionary ℓ 19, a 13th-century, Greek manuscript of the New Testament * Nikon CoolPix L19, one of the Nikon Coolpix series of cameras * L19, human single-chain Fv (scFv) antibody fragment directed against the extra-domain B (ED-B) of fibronectin This disambiguation page lists articles associated with the same title formed as a letter-number combina