If

{{wiktionary|if}} '''If''' or '''IF''' may refer to:

*If (preposition), a preposition used in English conditional sentences *If (subordinator), a subordinator used for English subordinate interrogative clauses

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==Arts and entertainment== ===Film, drama, and television=== * ''If....'', a 1968 film starring Malcolm McDowell * ''IF'' (film), a 2024 fantasy film about imaginary friends * ''If'' (play), a 1921 play by Lord Dunsany * ''If...'' (TV series), a series of BBC drama-documentaries * "If..." (''Desperate Housewives''), a 2010 episode of ''Desperate Housewives''

===Gaming=== * IF, a character in the ''Hyperdimension Neptunia'' game series * Interactive fiction, text-based computer games featuring interactive stories and environments * ''Shin Megami Tensei If...'', a 1994 video game in the ''Shin Megami Tensei'' series * ''Kill la Kill the Game: IF'', a 2019 video game based on the ''Kill la Kill'' anime

===Literature=== * ''If'' (magazine), subtitled "Worlds of Science Fiction" * ''IF Magazine'', ''Inside Film'', Australian magazine, known for IF Awards * ''If...'' (comic), a political comic strip which appears in the UK newspaper ''The Guardian'' * "If—" (published 1910), a poem by Rudyard Kipling * The laconic phrase "If", a Spartan reply to a threat by Philip II

===Music=== * If (band), 1970s British progressive jazz-rock band * If?, early 1990s British alternative rock band * In Flames, a melodic death metal band from Sweden, and a song from their album ''Lunar Strain'' * I-F, stage name of Ferenc E. van der Sluijs, a Dutch producer and DJ

====Albums==== * ''If'' (Glass Hammer album), 2010 album by American band Glass Hammer * ''If'' (If album), 1970 album by the English band If * ''if'' (Mindless Self Indulgence album), a 2008 album recorded by Mindless Self Indulgence * ''(if)'', a 2009 album by Diary of Dreams * ''If...'', a 2011 orchestral concept album by Bill Ryder-Jones * ‘’If…’’, a 1992 album by English band Scorpio Rising

====Songs==== * "If..." (The Bluetones song), 1998 * "If" (Bread song), 1971, covered by many artists, including a UK #1 by Telly Savalas in 1975 * "If" (Davido song), 2017 * "If" (French Kiss song), 2011 * "If" (Glasvegas song), 2013 * "If" (Janet Jackson song), 1993 * "If" (Kana Nishino song), 2010 * "If" (Pink Floyd song), 1970 * "If (Mata Aetara)", by Day6, 2018 * "If (They Made Me a King)", written by Tolchard Evans, Robert Hargreaves and Stanley J. Damerell, 1934; notably recorded by Perry Como, 1950 * "If", by Jeri Lynne Fraser (as Jeri Lynn), 1959 * "If", by Femme Fatale from ''Femme Fatale'', 1988 * "If", by The Cult from ''Ceremony'', 1991 * "If", by Joe Satriani from his 1995 self-titled album * "If...", by The Divine Comedy from ''A Short Album About Love'', 1997 * "If", by Bananarama from ''Exotica'', 2001 * "If", by Destiny's Child from ''Destiny Fulfilled'', 2004 * "If", by Red Hot Chili Peppers from ''Stadium Arcadium'', 2006 * "If", by Freemasons from ''Unmixed'', 2007 * "If", by Joni Mitchell from ''Shine'', 2007 * "If", by R5 from ''New Addictions'', 2017

==Business and organizations== * If (insurance company), in the Nordic countries * IF Metall, a trade union in Sweden * Illuminati Films, an Indian motion picture production, based in Mumbai * Independent Fabrication, a bicycle manufacturer * Intelligent Finance, a bank * Interflug (1958–1991; IATA airline designator IF) * International Federation, any of several world sport governing bodies * International Forum Design (iF), a society best known for its iF design awards * Islamic Front (Syria), Sunni Islamist rebel group involved in the Syrian Civil War * Islas Airways (founded 2002; IATA airline designator IF)

==Science and technology== ===Biology and medicine=== * ''I''_''f'' current, a component current in the cardiac pacemaker potential * Immunofluorescence, a form of labeling substances with fluorescent antibodies * Initiation factor, an important component in protein synthesis * Intermediate filament, a component of the cytoskeleton * Interstitial fluid, the liquid outside of a cell * Intrinsic factor, produced by the stomach

===Computing and mathematics=== * If-then-else, a conditional statement in computer programming * IF (x86 flag), the Interrupt Flag in the x86 processor architecture * Information filter, or inverse covariance filter, in Kalman filtering * Interface (computing), a shared boundary across which components of a computer system exchange information * Intermediate form, a type of data structure in computer programming

===Other uses in science and technology=== * Information filtering system, which removes redundant or unwanted information at a semantic level * Intelligent falling, a satirical "alternative theory" of gravitation * Intermediate frequency, in radio transmission or reception * Internal focusing, a lens technology in which focusing occurs only with internal elements * Iodine monofluoride, an unstable interhalogen inorganic compound * International Fujita scale (IF-scale), a scale to rate a tornado's intensity

==Other uses== * If, a small island in the Bay of Marseille, France; location of the Château d'If * Impact factor, a measure reflecting the average number of citations to articles published in scholarly journals * Intellectual freedom, a right to access, explore, consider, and express ideas and information * Intermittent fasting, a diet having recurring periods of fasting * Internally Flawless, a grade of diamond clarity * Inside forward, a position in association football * Ilfov County (except Bucharest), on the vehicle registration plates of Romania

==See also== * If and only if, ''iff'', logical statement indicating necessary and sufficient conditions * IFF (disambiguation) * IFS (disambiguation) * {{lookfrom|If}}

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