Kathleen Hanna (born November 12, 1968) is an American singer, musician, artist, feminist activist, pioneer of the feminist punk riot grrrl movement, and punk zine writer. In the early-to-mid-1990s she was the lead singer of feminist punk band Bikini Kill, before fronting Le Tigre in the late 1990s and early 2000s. Since 2010, she has recorded as The Julie Ruin.
A documentary film about Hanna was released in 2013 by director Sini Anderson, titled The Punk Singer, detailing Hanna’s life and career, as well as revealing her years-long battle with Lyme disease. Hanna is married to Adam Horovitz of the Beastie Boys.