L14 or L-14 may refer to:
Vehicles Aircraft Daimler L14, a German fighter Lockheed L-14 Super Electra, an American passenger aircraft Piper L-14, an American military aircraft L-14, an L-class blimp of the United States Navy
Ships , a submarine of the Royal Navy , an amphibious assault ship of the Royal Navy , a destroyer of the Royal Navy , an amphibious warfare vessel of the Indian Navy , a Leninets-class submarine
Other uses L14 (New York City bus) 60S ribosomal protein L14 County Road L14 (Lyon County, Iowa) Lectionary 14, a 16th-century, Greek manuscript of the New Testament Nissan L14 engine, an automobile engine