"Homo Sol" is a science fiction short story by Isaac Asimov that was first published in the September 1940 issue of Astounding Science Fiction and reprinted in the 1972 collection The Early Asimov. It deals with the proposed acceptance into a galactic federation of hominid civilizations of the hominids of newly discovered Earth. (Each member civilization is referred to by a prefix denoting its shared "hominidity", followed by the name of its star — hence the title, Homo Sol.)