Superfuzz Bigmuff is the debut album and first major release by the Seattle grunge band Mudhoney.

[1] Guitarist Turner also considered it to be Mudhoney's first official studio album, despite it being an EP initially.

[2] "In 'n' Out of Grace" opens with a sample of the eulogy from Peter Fonda's character in the 1966 movie The Wild Angels, saying "We wanna be free to do what we wanna do…"; a similar sample was later used on Primal Scream's song "Loaded", and also a refraining soundbite and quote in the 2013 film The World's End.

During initial release, the EP sold incredibly poorly (even by Sub Pop standards)[citation needed]; however, it has since been acknowledged as one of the seminal records of the Seattle scene.

In its review, Jamie Gonzalo called it "sexy, smart, humorous and hard", as well as writing "[Mudhoney] emerged from the underground with this mischievous workout, achieving tense and dramatic musical structures with Turner's scalping guitars, Mark Arm's angry vocals, Matt Lukin's mighty bass and Dan Peters' propulsive drums.