L4

L4 or L-4 may refer to :

==Transportation== L 4, an Imperial German Navy Zeppelin airship active during the First World War SP&S Class L-4, an 1884 steam locomotives class USS L-4 (SS-43), a 1915 United States Navy L-class submarine HMS L4, a 1918 British L class submarine Lawson L-4, a 1924 American unflown biplane airliner Piper Cub (U.S. military designation: L-4), an aircraft Inline-four engine (L4), a type of inline internal combustion four cylinder engine Liberty L-4, a World War I four-cylinder, water-cooled, inline, aero-engine Lynx Aviation (IATA code) L4 (New York City bus), a temporary bus route in New York City L4, an S-Bahn line of the Léman Express in Switzerland and France Parramatta Light Rail, also known as the L4, a light rail service in Parramatta, Sydney, Australia Chaika L-4, a Russian twin-engined amphibious aircraft Soviet submarine L-4