XL or xl may stand for:

  • 40 (number) in Roman numerals

In business:

  • Extra large, a clothing size
  • XL Airways France, a French airline
  • XL Airways Germany, a German charter airline
  • XL Axiata, an Indonesian mobile phone network operator
  • XL Center, a civic center in Hartford, Connecticut, United States
  • XL Group, a financial services company headquartered in Ireland with executive offices in Bermuda
  • XL Recordings, a British independent record label
  • XL Leisure Group, a major United Kingdom tour operator, which ceased operations in 2008
    • XL Airways UK, a defunct British airline which was part of XL Leisure Group
  • LAN Ecuador's IATA code
  • Excess-of-loss reinsurance, a particular non-proportional type of reinsurance contact

In science and technology:

  • XL, inductive reactance, a property of an inductor

In computers:

  • the XL series computers in the Atari 8-bit family (including the 600XL, 800XL and 1200XL)
  • XL (programming language), a computer programming language designed to support concept programming
  • Weather Star XL (also known as just XL), a computer used by The Weather Channel for local forecasts

In entertainment:

  • XL (eXplicit Language), a content descriptor used by XM Satellite Radio
  • XL, a character in Buzz Lightyear of Star Command


  • North Texas Intermediate Sanctions Facility (TDCJ shorthand is "XL")