Superunknown is the fourth album by American grunge band Soundgarden, released on March 8, 1994 through A&M Records. It is the band's second album with bassist Ben Shepherd. Soundgarden began work on the album after touring in support of its previous album, Badmotorfinger (1991). Superunknown continued a departure from the band's earlier releases while displaying a more diverse range of influences.

Superunknown was a critical and commercial success and became the band's breakthrough album. It debuted at number one on the Billboard 200 and reached high positions on charts worldwide. Five singles were released from the album: "The Day I Tried to Live", "My Wave", "Fell on Black Days", "Spoonman" and "Black Hole Sun", the latter two of which won Grammy Awards and helped Soundgarden reach mainstream popularity. In 1995, the album was nominated for the Grammy Award for Best Rock Album. The album has been certified five times platinum by the RIAA in the United States and remains Soundgarden's most successful album. In 2003, the album was ranked number 336 on Rolling Stone magazine's list of the 500 greatest albums of all time. The album was ranked number 38 on Rolling Stone magazine's list of the 100 Greatest Albums of the Nineties, and number five on Guitar World magazine's top ten list of guitar albums of 1994.

David Eric "Dave" Grohl (born January 14, 1969) is an American rock musician, multi-instrumentalist, and singer-songwriter, who is the lead vocalist, guitarist, primary songwriter and founder of the Foo Fighters, prior to which he was the drummer in the grunge band Nirvana. He is also the drummer and co-founder of the rock supergroup Them Crooked Vultures. Grohl has additionally written all the music and performed all the instruments for his short-lived side projects Late! and Probot, as well as being involved with Queens of the Stone Age numerous times throughout the past decade. He has performed session work (as a drummer) for a variety of musicians, including Garbage, Killing Joke, Nine Inch Nails, The Prodigy, Slash, Juliette Lewis, Tenacious D, Tom Petty and the Heartbreakers, and Lemmy Kilmister.

As a child, Grohl's family relocated from Warren, Ohio, to Springfield, Virginia, a suburb of Washington, D.C. Three years later, when Grohl was six, his parents divorced, and Grohl grew up living with his mother.