Extreme may refer to:

Science and mathematics

Mathematics

*Extreme point, a point in a convex set which does not lie in any open line segment joining two points in the set *Maxima and minima, extremes on a mathematical function

Science

*Extremophile, an organism which thrives in or requires "extreme" *Extremes on Earth *List of extrasolar planet extremes

Politics

*Extremism, political ideologies or actions deemed outside the acceptable range *The Extreme (Italy) or Historical Far Left, a left-wing parliamentary group in Italy 1867–1904

Business

*Extreme Networks, a California-based networking hardware company *Extreme Records, an Australia-based record label *Extreme Associates, a California-based adult film studio

Computer science

*Xtreme Mod, a peer-to-peer file sharing client for Windows

Sports and entertainment

Sport

*Extreme sport *Extreme Sports Channel A global sports and lifestyle brand dedicated to extreme sports and youth culture *Los Angeles Xtreme, a defunct XFL franchise

Music

*Extreme metal, an umbrella term for a group of related heavy metal subgenres *Extreme (band), an American band **Extreme (album), ''Extreme'' (album), an album by Extreme *Xtreme (group), a bachata duo **Xtreme (album), ''Xtreme'' (album), an album by Xtreme *Extremes (album), ''Extremes'' (album), an album by Collin Raye *X-Treme, a stage name of Italian singer and producer Agostino Carollo

Entertainment

*Extreme Sports Channel, a global TV channel dedicated to extreme sports and youth culture *RTL CBS Extreme, a Southeast Asian TV channel simply known as "Extreme" prior to the rebranding as Blue Ant Extreme *Extreme (1995 TV series), ''Extreme'' (1995 TV series), a 1995 American action series that aired on ABC *Extreme (2009 TV series), ''Extreme'' (2009 TV series), a 2009 American television series that aired on the Travel Channel *Extreme (CSI: Miami), "Extreme" (CSI: Miami), a season two episode of ''CSI: Miami''

Literature

*The Extreme (novel), ''The Extreme'' (novel), a 1998 Animorphs novel by K. A. Applegate *Extremes (novel), ''Extremes'' (novel), by Kristine Kathryn Rusch *Extreme Studios, a forerunner of the American comic book studio Image Comics *Adam X the X-Treme, a character in the Marvel Comics universe *''Extreme'', an autobiography by Sharon Osbourne

Other uses

*Chevrolet Extreme, a name for the Chevrolet S-10 pickup truck *Extrême, a pre-filled ice-cream cone brand by Nestlé