Lf

Lf or LF may refer to:

Arts and entertainment

 * LF (album), by Raymond Lam
 * Left fielder, a position in baseball
 * 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

Places

 * Lakeland, Florida
 * Livermore Falls, Maine
 * Lambeau Field, a stadium in Green Bay, Wisconsin and the home of the Green Bay Packers

Biology and medicine

 * Lactoferrin, a protein
 * 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.