Isotopes are any of the several different forms of an element each having different atomic mass (mass number).

Isotope may also refer to: Isotope (band), a British jazz-rock band (1972–1976) Isotope (album), a 1983 album by jazz pianist Kirk Lightsey Isotope (catamaran), an American sailboat design Albuquerque Isotopes, a minor league baseball team of the Pacific Coast League Springfield Isotopes, a fictional baseball team in the TV show The Simpsons Isotopes Punk Rock Baseball Club, a Canadian baseball-themed punk rock band Isotope 217, a jazz band from Chicago, United States Isotope 244, a video game developer based in the USA Isotope (Jordan algebra) in mathematics, a method of modifying the product on a Jordan algebra An isotope of an algebra: see Isotopy of algebras An isotope of a loop or quasigroup: see Isotopy of loops Isotope, a minor antagonist from the comic series Invincible (comics) and its TV adaptation Invincible (TV series)

See also Isotone Isotropy, an unrelated concept Isotype (disambiguation) iZotope, Inc., an audio technology company :Category:Lists of isotopes by element