Liz Phair (born Elizabeth Clark Phair on April 17, 1967 in New Haven, Connecticut, USA) is an American singer-songwriter and guitarist.

Phair began her career in the early 1990s by self-releasing lo-fi audio cassettes under the moniker Girly Sound, before signing with Matador Records and becoming one of the leading artists of the 1990s DIY indie rock underground. In 2003, Phair's fourth album, Liz Phair, was released on her new label, Capitol Records and her music began to move in a more pop rock-oriented approach.

Her signature guitar, which she is often seen playing (and is prominent upon the cover of her self-titled fourth album), is a Fender Duo-Sonic II. Her album Exile in Guyville was chosen as one of Rolling Stone's 500 Greatest Albums of All Time.

Phair signed with ATO Records in early 2008 and re-released Exile in Guyville on June 24, 2008.   Exile in Guyville was reissued on CD, vinyl, and in digital format. The special reissue package includes three never-before-released songs from the original recording sessions: "Ant in Alaska," "Say You," and an untitled instrumental. Phair has also completed a new documentary DVD, "Guyville Redux."