Friction is a Japanese rock band formed in 1978. They originally began in 1971 under the name Maru Sankaku Shikaku, and are considered to be one of the pioneers of Japan's alternative rock scene. The group ended activities in 1996, but original member Reck reformed Friction in 2006 as a duo with drummer Tatsuya Nakamura.
In September 2007, Rolling Stone Japan rated their debut album Atsureki at #21 on its list of the "100 Greatest Japanese Rock Albums of All Time".