"Why Can't I?" is a song by American singer-songwriter Liz Phair. It was released on May 5, 2003, as the lead single from her self-titled fourth album. It reached number 32 on the US Billboard Hot 100, becoming Phair's highest-charting single and only top-40 single. The song was certified gold in the US, having sold 500,000 copies there.

Elizabeth Clark Phair is an American rock singer-songwriter and musician. Born in New Haven, Connecticut, Phair was raised primarily in the Chicago area. After graduating from Oberlin College in 1990, she attempted to start a musical career in San Francisco, California, but returned to her home in Chicago, where she began self-releasing audio cassettes under the name Girly-Sound. The tapes led to a recording contract with the independent record label Matador Records.