LF or Lf may refer to:
Arts and entertainment LF (album), by Raymond Lam Laxius Force, a role-playing video game trilogy Libby Folfax, a character in Jimmy Neutron: Boy Genius Lifeforce (film), a 1985 film directed by Tobe Hooper Salamander (video game), an arcade game retitled Life Force
Companies and organisations LeapFrog Enterprises, an educational toy company Lebanese Forces, a Lebanese political party Li & Fung, a company of Hong Kong Linux Foundation, a non-profit organization for the promotion of Linux LoveFilm, UK-based provider of home video and video game rental through DVD-by-mail and streaming video on demand People's Life First, a Japanese political party FlyNordic (IATA airline designator LF), a defunct Swedish airline Nippon Broadcasting System, also known as JOLF, a radio station in Tokyo, Japan LF Corporation, a South Korean fashion company
Places Lakeland, Florida Livermore Falls, Maine Lambeau Field, a stadium in Green Bay, Wisconsin and the home of the Green Bay Packers
Science and technology Biology and medicine Lactoferrin, a protein Lassa fever, a type of viral hemorrhagic fever Lateral flow test, an immunologic test Lymphatic filariasis, a disease common in tropical regions L.f., taxonomic author abbreviation of Carl Linnaeus the Younger (1741–1783), Swedish naturalist
Logic and information theory Lexical function, a tool for the description of semantic relationships Logical form, the abstract form of a set of sentences in logic Logical form (linguistics), a level of syntactic representation Logical framework, in automated theorem proving LF (logical framework), a particular logical framework
Other uses in science and technology Missile launch facility, a structure used for launching ballistic missiles Limestone filler, used in cement and concrete fabrication Line feed character, in typing and computing; also called newline, line break, or end-of-line Lineal foot, a measurement of length without regard to width Load factor (disambiguation) Logic File, a logic file category London forces, a type of intermolecular forces Low frequency, a radio frequency between 30 and 300 kHz
Other uses Laissez-faire, a concept in economics Left fielder, a defensive position in baseball Left Front (disambiguation) Lexus LF, a concept automobile LF-routes, a network of long-distance cycling routes in the Netherlands and Belgium