XL or variants may stand for:
The XLR connector is a style of electrical connector, primarily found on professional audio, video, and stage lighting equipment.
XL Recordings (or simply XL) is a British independent record label founded in 1989 by Richard Russell, Tim Palmer and Nick Halkes.
The XL Center (originally known as the Hartford Civic Center) is a multi-purpose arena and convention center located in downtown Hartford, Connecticut.
XLRI – Xavier School of Management is a management school founded in 1949 by the Society of Jesus (Jesuits) and based in Jamshedpur, Jharkhand, India.
XL Airways Germany Flight 888T (GXL888T) was an Airbus A320 which crashed into the Mediterranean Sea, 7 km off Canet-en-Roussillon on the French coast, close to the Spanish border, on 27 November 2008. The aircraft was on a flight test (or "acceptance flight") for which it had taken off from Perpignan - Rivesaltes Airport, made an overflight of Gaillac and was flying back to Perpignan Airport, doing an approach over the sea.
XL stands for eXtensible Language. It is the first and so far the only computer programming language designed to support concept programming.
The Bell Aerosystems Company XLR81 (Model 8096) was an American liquid-propellant rocket engine, which was used on the Agena upper stage.