In the Dungeons & Dragonsfantasyrole-playing game, Gith is the fictional liberator of the race that would become the githyanki and githzerai. Largely absent, her role is one of a legendary figure of myth rather than an active player in the game's fictional universe (though some published adventures, such as the fourth edition Scales of War adventures, feature her in a more active role). In the chronology of the game, Gith freed her race from slavery at the hands of the Illithids, and then sacrificed her own freedom and life for the ensured survival of her newly freed people, thus cementing her as a recurring motif in githyanki-based adventures.
Gith is described as being native to the planet Pharagos, part of the vast illithid empire, although she later led her followers to the Astral Plane after defeating their illithid masters in the 'Before Present' chronology of the game.
Gith is said to have gone to the plane of Baator to serve Tiamat, the queen of evil dragons, as part of a pact between the Githyanki and red dragons which was brokered by her advisor, Vlaakith.
After this pact was made, the red dragon consort of Tiamat, Ephelomon, went to Gith's followers to tell them of her sacrifice and convey Gith's final decree, making Vlaakith the first queen of all the githyanki and ordering them to continue their conquests.