Retroactive may refer to: Retroactive (album), an album by Grand Puba Retro-active, an album by Karizma Retro Active, an album by Def Leppard Retroactive (film), a 1997 movie starring James Belushi and Kylie Travis See also Retroactive law, another term for ex post facto law Retroactive data structures, datum structures that allow modifications to past actions Retroactive continuity in fiction Retrospective, often synonymous when used as an adjective