Star seed or starseed may refer to:
Music Starseed (band), South-African/British rock band "Starseed" (song), a 1994 single by Our Lady Peace Star Seed, a 2021 single by Loona
Literature Starseed (novel), a 1991 science fiction novel by Spider Robinson and Jeanne Robinson Starseed, a 1973 book by Timothy Leary Starseeds, fictional microorganisms used by Outsiders to seed new planets with life in Larry Niven's Known Space science fiction series
Other uses Starseed launcher, a hypothetical concept of a space exploration system Starseeds (New Age), individuals who state they have originated from another planet or galaxy Star seeds, a type of crystal in sentient life in the Sailor Moon: Sailor Stars series
See also "Space Seed", an episode of the television series Star Trek