Jack Endino is a producer and musician based in Seattle. Long associated with Seattle label Sub Pop and the grunge movement, Endino worked on seminal albums from bands such as Mudhoney, Soundgarden, and Nirvana. Endino has maintained a down-to-earth and humorous website since 1997, and currently manages a studio in Seattle called Soundhouse Recording.

n 1985, Endino and Daniel House started the influential grunge band Skin Yard. Though originally a drummer, Endino played guitar and Matt Cameron played drums until he left for Soundgarden. In 1986, Skin Yard contributed two songs to C/Z Records' legendary grunge compilation Deep Six. In July 1986, Endino left his basement recording studio to found Reciprocal Recording with Chris Hanzsek, the Deep Six sound engineer, where he used his self-taught recording skills to produce, engineer, and mix Skin Yard's 1987 debut album Skin Yard. His skill and low fees meant that he was soon an engineer of choice for up-and-coming Seattle grunge bands, and in 1988, he recorded Nirvana's debut album Bleach in a mere 30 hours for $606.17, using a rather primitive reel-to-reel 8-track machine. The album did well in the underground, and after the success of 1991's Nevermind it went platinum. After Reciprocal Recording closed in July 1991, Endino continued as a freelance producer and engineer, producing several albums including Bruce Dickinson's Skunkworks.

He appeared in the 1996 grunge documentary Hype!, where he's humorously referred to as "the godfather of grunge."

Endino was also interviewed at length for the 2009 book, 'Grunge is Dead: The Oral History of Seattle Rock Music'.