FL

FL or variations may refer to:

Places

* Florida (United States postal abbreviation)
* Liechtenstein (International license plate code)

Businesses and organizations

* AirTran Airways (IATA airline code)
* Foot Locker, Inc. (ticker symbol)
* FL Group, an Icelandic investment company with an emphasis on flight and tourism industry
* The Football League in England

Measures

* femtolitre, a metric unit of volume
* foot-lambert, a unit of luminance
* Flawless, a grade of diamond clarity
* Fork length, a standard fish measurement
* Forestay Length, in sailing

Mathematics and computing

* FL (complexity), a class of functions in complexity theory
* FL (programming language)
* FL Studio, a music production software program
* Freelancer (computer game)
* Flash in Adobe Flash, a professional Flash authoring tool by Adobe, as part of Adobe Creative Suite

Numismatics

* Florin, various coins
* Guilder, various coins also sometimes called florin

Other

* Fastest Lap in motorsports
* Foreign language
* Flight level, a nominal altitude designation in aviation (in hundreds feet)
* Freelancer, a self-employed professional
* Fully Licensed, a restaurant licensed to sell liquor
* Fanlisting
* floruit (Latin, "flourished"), used to indicate periods when a person, organization, or species was influential
* fl (fl), a common typographical ligature
* Follicular lymphoma in Medicine