"2 + 2 = 5" is a song by the English rock band Radiohead, released as the third and final single from their sixth studio album, Hail to the Thief (2003), on 17 November 2003. It references the slogan "two plus two equals five" from the 1949 dystopian novel Nineteen Eighty-Four by George Orwell. "2 + 2 = 5" reached number two in Canada, number 12 in Italy and number 15 in the UK. A live version recorded at Earl's Court, London, was included on the 2004 EP Com Lag and the 2025 album Hail to the Thief (Live Recordings 2003–2009).
Tracklist