Bad 25 is a 25th anniversary special edition reissue of American recording artist Michael Jackson's seventh studio album Bad. This is the second album by Jackson to be re-released on its 25th anniversary (the first one being Thriller 25, which was released in 2008). In a press release by the Estate of Michael Jackson in May 2012, the album, which sold between 30 and 45 million copies worldwide (making it one of the best selling albums of all time), will be re-released on September 18, 2012. Along with the original remastered album, Bad 25 will contain unreleased demo recordings and a live CD and DVD of Jackson's performance at Wembley Stadium during his Bad World Tour that was attended by Princess Diana and Prince Charles.

Announced in May 2012 by the Estate of Michael Jackson, various formats of Bad 25 will be released simultaneously on September 18, 2012. The album, a two-disc set, will include the original, remastered album, as well as unreleased material recorded during the Bad sessions. The material includes early demo versions of songs from the album, demos of songs not included on the final album and remixes from internationally renowned DJ/producers. A DVD of Jackson's July 16, 1988 performance in Wembley, London will also be released. This performance from Jackson's Bad World Tour has often been hailed as one of Jackson's best performances, and has been petitioned for release by fans for years.