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.

Bad or BAD may refer to:

Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American recording artist, entertainer, and businessman. Often referred to as the King of Pop, or by his initials MJ, Jackson is recognized as the most successful entertainer of all time by Guinness World Records. His contribution to music, dance, and fashion, along with a much-publicized personal life, made him a global figure in popular culture for over four decades. The seventh child of the Jackson family, he debuted on the professional music scene along with his brothers as a member of The Jackson 5 in 1964, and began his solo career in 1971.

In the early 1980s, Jackson became a dominant figure in popular music. The music videos for his songs, including those of "Beat It", "Billie Jean", and "Thriller", were credited with transforming the medium into an art form and a promotional tool, and the popularity of these videos helped to bring the relatively new television channel MTV to fame. Videos such as "Black or White" and "Scream" made him a staple on MTV in the 1990s. Through stage performances and music videos, Jackson popularized a number of complicated dance techniques, such as the robot and the moonwalk, to which he gave the name. His distinctive musical sound and vocal style influenced numerous hip hop, post-disco, contemporary R&B, pop and rock artists.