FL

FL or variations may refer to:

Arts and entertainment

• The Flaming Lips, an American rock band
• Freelancer (computer game)

Businesses and organizations

• AirTran Airways (IATA airline code)
• FL Group, an Icelandic investment company with an emphasis on flight and tourism industry
• Foot Locker, Inc. (ticker symbol)

Numismatics

• Florin (disambiguation), various coins
• Guilder, various coins also sometimes called "florin"

Places

• Florida (United States postal abbreviation)
• Fort Lauderdale, Florida, a city in Florida, United States
• Fürstentum Liechtenstein (Principality of Liechtenstein)

Science and technology

Biology and medicine

• Fluorouracil (5-FU) and leucovorin (folinic acid), a chemotherapy regimen for treating colon cancer
• Follicular lymphoma in medicine
• Fluffy transcription factor
• FLT3LG (Fms-related tyrosine kinase 3 ligand), a protein

Mathematics and computing

• FL (complexity), a class of functions in complexity theory
• FL (programming language)
• Adobe Flash Professional, software which uses "Fl" as its icon abbreviation
• FL Studio, a music production software program

Other uses in science and technology

• Femtolitre, a metric unit of volume
• Flerovium, chemical element 114
• Flight level, a standard nominal altitude of an aircraft, in hundreds of feet
• "Fluid", as in fluid ounce (fl oz)
• Foot-lambert, a unit of luminance
• Friedmann–Lemaître metric in cosmology

Sport

• Fastest lap, in motorsports, the quickest single trip around the track by any driver during a race
• Federal League, a United States baseball league in 1914
• Forestay length, in sailing
• English Football League, an organisation containing Levels 2-4 in the football pyramid, still commonly known as simply the "Football League".

Other uses

• fl (fl), a common typographical ligature
• FetLife, a social networking site for people interested in BDSM, fetishism and kink
• Flagship Lounge, the first class lounge of American Airlines
• Flavius, a gens (family name) or praenomen (personal name) in ancient Rome
• Flawless, a grade of diamond clarity
• Floor or storey, a floor level in a building
• Floruit (Latin, "flourished"), used to indicate periods when a person, organization, or species was influential
• Foreign language, a human language not spoken in one's native country
• Fork length, a standard fish measurement
• Freelancer, a self-employed professional
• Free List (Liechtenstein), a center-left political party in Liechtenstein