Mojacko (モジャ公, Mojakō) is a shōnen manga series created by duo Fujiko Fujio. It was first serialized in Kodansha’s Bokurano Weekly in 1969 to 1970, compiling into 35 tankōbon volumes. It was then revived twice by Hiroshi Fujimoto (Fujiko F. Fujio) and published in Shogakukan’s CoroCoro Comic from September 1995 to April 1996, with a total of seven volumes and in Labybug Comics from June 1996 to April 1997, with a total of 10 volumes. The manga revolves around Sorao Amano, an ordinary student who befriends two aliens stranded on their planet while helping them to get home.

The series was later adapted into anime, directed by Tetsuya Endo and produced by Oriental Light and Magic. It premiered on October 3, 1995 and ran until March 31, 1997, with a total of 74 episodes.

Enoki Films once licensed the series outside of Japan.