X is an American punk rock band formed in Los Angeles. The original members are vocalist Exene Cervenka, vocalist-bassist John Doe, guitarist Billy Zoom and drummer D. J. Bonebrake. The band released seven studio albums from 1980 to 1993. After a period of inactivity during the mid-to-late 1990s, X reunited in the early 2000s and continued to tour. In June 2024, X announced a final album and farewell tour.

X achieved limited mainstream success but influenced various genres of music, including punk rock, Americana, and folk rock. In 1991, Music critic Robert Hilburn identified them as one of the most influential bands of their era. In 2003, X's first two studio albums, Los Angeles and Wild Gift, were ranked by Rolling Stone as being among the 500 greatest albums of all time. Los Angeles was ranked 91st on Pitchfork's Top 100 Albums of the 1980s.