Thriller 25 is the 25th-anniversary edition reissue of Thriller (1982), the sixth studio album by American singer and songwriter Michael Jackson. The original album has sold 70 million copies worldwide, making it the best-selling album of all time. Thriller 25 was released by Sony BMG's reissue division, Legacy Recordings. Along with the original material, the reissue contains remixes, new material, a DVD and collaborations with contemporary artists. Thriller 25 was one of the last recorded works released during Jackson's lifetime, and the last he was extensively involved with, as Jackson co-produced all of the newly remixed tracks.

Thriller is the sixth studio album by the American singer and songwriter Michael Jackson, released on November 29, 1982, by Epic Records. It was produced by Quincy Jones, who had previously worked with Jackson on his 1979 album Off the Wall and who would later produce his 1987 album Bad. Jackson wanted to create an album where "every song was a killer". With the ongoing backlash against disco music at the time, he moved in a new musical direction, resulting in a mix of pop, post-disco, rock, funk, synth-pop, and R&B sounds. Thriller foreshadows the contradictory themes of Jackson's personal life, as he began using a motif of paranoia and darker themes. Paul McCartney appears on "The Girl Is Mine", the first credited appearance of a featured artist on a Michael Jackson album. Recording took place from April to November 1982 at Westlake Recording Studios in Los Angeles, California, with a budget of $750,000.