Kim Althea Gordon (born April 28, 1953, Rochester, New York) is an American musician. Gordon, who started out as a visual artist, rose to prominence as the bassist, guitarist, and vocalist of alternative rock band Sonic Youth, which she formed with Thurston Moore in 1981. Gordon also formed the musical project Free Kitten with Julia Cafritz (of Pussy Galore) in the 1990s, and debuted as a producer on Hole's debut album Pretty on the Inside (1991). Gordon also worked on a fashion line called X-Girl in 1993, and continued to write and release material with Sonic Youth throughout the 1990s and on into the late 2000s.

Gordon has collaborated with Ikue Mori, DJ Olive, William Winant, Lydia Lunch, Yoko Ono, Raymond Pettibon, Courtney Love, and Chris Corsano. In 2012, after the breakup of Sonic Youth, Gordon formed Body/Head with friend Bill Nace, releasing their debut album Coming Apart in September 2013. Gordon's memoir, Girl in a Band, will be published on 24 February, 2015, by HarperCollins imprint Dey Street Books.