Os Mutantes
Os Mutantes in 1969
Background information
Origin	São Paulo, Brazil
Genres	Tropicália psychedelic rock[1] psychedelic pop[2][3] experimental rock[4] progressive rock (later)[5]
Years active	1966–1978 2006–present
Labels	Polydor Universal Som Livre Sony BMG (Brazil) Omplatten Polydor Universal Luaka Bop ANTI- Krian Music Group (US)
Members	Sérgio Dias Esmeria Bulgari Vinicius Junqueira Camilo Macedo Henrique Peters Cláudio Tchernev[6]
Past members	Cláudio César Dias Baptista Arnaldo Baptista Rita Lee Liminha Dinho Leme Manito Rui Motta Túlio Mourão Antônio Pedro Paulo de Castro Fernando Gama Zélia Duncan Bia Mendes Fabio Recco Ani Cordero Amy Crawford

Os Mutantes (Brazilian Portuguese: [uz muˈtɐ̃tʃis], The Mutants) is a Brazilian rock band that were linked with the Tropicália movement of the late 1960s. Heavily influenced by Anglo-American psychedelic pop,^[7] they bridged Brazilian sensibilities together with studio trickery, feedback, distortion, and musique concrète.^[8] They released their now-acclaimed self-titled debut album in 1968.

Os Mutantes formed as a trio in 1966. They backed Gilberto Gil on his 1968 self-titled album and were featured on the famous Tropicália: ou Panis et Circencis collective album that year. The group quickly became one of the main figures of the "new MPB" (popular Brazilian music) and Brazilian rock. Their 1970s work eventually moved toward progressive rock, with Lee leaving the group in 1972. They broke up in 1978. Throughout these twelve years, nine albums were recorded, although two of them – O A e o Z and Tecnicolor – were only released in the 1990s. It was during this later decade that Os Mutantes was recognized, by both national and international press, as an important act of the psychedelic era.

Although best known for its original line-up of Rita Lee, Arnaldo Baptista and Sérgio Dias, the band has gone through numerous personnel changes throughout its existence, with Dias being the band's sole consistent member; Liminha and Dinho Leme also joined the group later on. After a hiatus from the late 1970s to the early 2000s, the band reunited in 2006 without Lee, touring and recording new material.