Alien 3 (stylized as ALIEN³) is a platform video game based on the 1992 film of the same name. The game was released for the Sega Genesis and Amiga in 1992. Additional versions were released in 1993, for the Commodore 64, Game Boy, Game Gear, Nintendo Entertainment System (NES), Super Nintendo Entertainment System (SNES), and Master System.

Each version was developed by Probe Software, except for the Game Boy version, which was developed by Bits Studios. Acclaim Entertainment published the Commodore 64 version, Virgin Interactive published the Amiga version, while Arena Entertainment published the Game Gear and Genesis versions. LJN published all other versions. Alien 3 received generally positive reviews, with most critics praising its music and graphics.