Florida (United States postal abbreviation)

Liechtenstein (International license plate code)

The Football League in England

Freelancer (computer game)

Flawless, a grade of diamond clarity

fl (fl), a common typographical ligature

AirTran Airways (IATA airline code)

Flight level, a nominal altitude designation in aviation

Foreign language

FL Studio, a music production software program

Freelancer, a self-employed professional

FL Group, an Icelandic investment company with an emphasis on flight and tourism industry

Foot Locker, Inc. (ticker symbol)

Fork length, a standard fish measurement

floruit (Latin, "flourished"), used to indicate periods when a person, organization, or species was influential

Forestay Length, in sailing

Florin, various coins

Fastest Lap in motorsports

Guilder, various coins also sometimes called florin

Fanlisting summary and related information.

FL (programming language)

FL (complexity), a class of functions in complexity theory

Fully Licensed, a restaurant licensed to sell liquor

foot-lambert, a unit of luminance