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 Associa…Read more on Wikipedia