A twin tail is a type of vertical stabilizer arrangement found on the empennage of some aircraft.
A twin tail can also simplify hangar requirements, give dorsal gunners enhanced firing area, and in some cases reduce the aircraft's weight.
Many canard aircraft designs incorporate twin tails on the tips of the main wing.
Examples of this construction are the twin-engined Lockheed P-38 Lightning; Northrop P-61 Black Widow; Focke-Wulf Fw 189; the single jet-engined de Havilland Vampire; cargo-carrying Fairchild C-119 Flying Boxcar and the little known Transavia PL-12 Airtruk.
Significant aircraft with twin tails include the Consolidated B-24 Liberator, Handley Page Halifax, Avro Lancaster, and P-38 Lightning.