If

If or IF may also refer to:

Arts and entertainment

IF, a fictional 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

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

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

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

"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
"If", a song by Femme Fatale (band) on their self-titled 1988 debut album

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
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)

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

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

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
Intermittent fasting, a diet having recurring periods of fasting
Internally Flawless, a grade of diamond clarity