Sleep is an American stoner doom band from San Jose, California. Active during the 1990s, Sleep earned critical and record label attention early in its career. Critic Eduardo Rivadavia describes them as "perhaps the ultimate stoner rock band" and notes they exerted a strong influence on heavy metal in the 1990s.
Sleep broke up toward the end of the 90s, only to reform in 2009, playing sporadic live dates internationally since.