If

If is a conjunction used in English conditional sentences.

If or IF may also refer to:

Places

• If, a small island in the Bay of Marseille, France, location of the Château d'If

Abbreviations not otherwise categorized below

• Information filter (disambiguation)
• Impact factor, a measure reflecting the average number of citations to articles published in scholarly journals
• Intermittent fasting, a diet having recurring periods of fasting
• Internally Flawless, a grade of diamond clarity

Art, entertainment, and media

Fictional entities

• IF, a fictional character in the Hyperdimension Neptunia series

Films

• if.... (1968), a Lindsay Anderson film starring Malcolm McDowell

Games

• Shin Megami Tensei If..., a 1994 video game in the Shin Megami Tensei series for the Super Famicom

Music

Groups and labels

• If (band), 1970s British progressive jazz-rock band
• IF, abbreviation for In Flames, a melodic death metal band from Sweden as well as a song from their album Lunar Strain

Albums

• If (Glass Hammer album)
• If (If album)
• if (Mindless Self Indulgence album), a 2008 album recorded by Mindless Self Indulgence
• If..., a 2011 orchestral concept album by Bill Ryder-Jones

Songs

• "If", a song by Bananarama, released in 2001
• "If..." (The Bluetones song), released in 1998
• "If" (Bread song), originally released in 1971 and a number one UK single by Telly Savalas in 1975
• "If", a song by The Cult from the album Ceremony
• "If...", released in 1997 by The Divine Comedy from the album A Short Album About Love
• "If" (Freemasons song), released in 2009
• "If" (French Kiss song), released in 2011
• "If", a 2013 song by Glasvegas
• "If" (Janet Jackson song), released in 1993
• "If", a Joni Mitchell song on her 2007 album Shine
• "If" (Kana Nishino song), released in 2010
• "If" (Pink Floyd song), released in 1970
• "If" (Red Hot Chili Peppers song), released in 2006
• "If (They Made Me a King)", a 1951 hit song by Perry Como

Television

• If... (TV series), a series of BBC drama-documentaries, a series of BBC drama-documentaries
• If... (Desperate Housewives), a 2010 episode from the 6th season of Desperate Housewives

Written works

• If (magazine), subtitled "Worlds of Science Fiction"
• If... (comic), a political comic strip which appears in the UK newspaper The Guardian
• "If—" (published 1910), a poem by Rudyard Kipling

Business and organizations

• If (insurance company), in the Nordic countries
• IF Metall, a trade union in Sweden
• IF? Records, a Tokyo-based electronic music label
• Illuminati Films, an Indian motion picture production, based in Mumbai
• Independent Fabrication, a bicycle manufacturer
• Intelligent Finance, a bank
• International Federation, as in a World Sports Governing Body
• 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

Computing and technology

• IF (x86 flag), the Interrupt Flag in the x86 architecture
• Interactive fiction, text-based computer games featuring interactive stories and environments
• Interface (computing), in Linux commands like ifup, ifdown and POSIX standards headers like if.h
• Intermediate form, a data structure constructed from the input to a computer program from which the output is constructed
• Intermediate frequency, an intermediate step in radio transmission or reception
• Internal focusing, a lens technology in which focusing occurs only with internal elements

Science and medicine

Abbreviations:

• The 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
• Intelligent falling, an alternative theory of gravitation
• Intermediate filament, a component of the cytoskeleton
• Interstitial fluid, the liquid outside of a cell
• Intrinsic factor, produced by the stomach
• Iodine monofluoride, unstable interhalogen inorganic compound

Transportation

• IF, IATA airline designator for Interflug (1958–1991)
• IF IATA airline designator for Islas Airways (2002+)

See also

• I-F
• If and only if, iff, indicating necessary and sufficient conditions
• If-then-else, conditional statement in computer programming
• IFF (disambiguation)
• IFS (disambiguation)
• All pages beginning with "If"