Tobi Vail is an alternative rock musician, fanzine writer, rock critic and feminist theorist from Olympia, Washington, USA.

She is best known as the drummer of Bikini Kill, one of the most influential bands of the riot grrl movement. She was the girlfriend of Kurt Cobain in the early 1990s, and an ex-girlfriend of Tim Armstrong, who wrote "Olympia,W.A" about their relationship.

She started the band THE FRUMPIES with Kathi Wilcox, Billy Karren and members of the band Bratmobile. She is also one of the founders of Bands Against Bush.