Galaga may refer to:
- Galaga video games based on "Galaxian" by Namco
- Galaga (1981 arcade game), video game by Namco, sequel to Galaxian
- Namco Galaga (1982 arcade hardware), Namco arcade game hardware
- Galaga 3 (1984 arcade game), video game by Namco, sequel to Galaxian
- Galaga '88 (1987 arcade game), video game by Namco, sequel to Galaga
- Galaga: Destination Earth (2000 video game), video game from Hasbro by King of the Jungle, based on Galaga
- Galaga 30th Collection (2011 computer game), video game by Namco Bandai based on Galaga