Tanith may refer to:
Mythology Tanith, alternative spelling of Tanit, an ancient Carthaginian lunar goddess of the Punic pantheon
People Tanith (DJ) (born 1962), stage name of Thomas Andrezak, German DJ and producer of electronic dance music Tanith Belbin (born 1984), Canadian/American figure skater Tanith Carey (born 1967), British author and journalist Tanith Lee (1947–2015), British author Tanith Maxwell (born 1976), South African runner Tanit Phoenix (born 1984), South African fashion model and actress
Fictional characters Tanith (Stargate), a male Goa'uld from Stargate SG-1 Tanith Carlisle, a leading character in The Devil Rides Out by Dennis Wheatley Tanith, a secondary character in The World of Lone Wolf gamebook series Tanith Low, a character in the Skulduggery Pleasant series of novels by Derek Landy Tanith, the deputy commander of Begnion's Holy Guard from Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn Tanith, head of the Volcano Manor in Elden Ring
Fictional locations Tanith (CoDominium), a planet in the CoDominium series of science fiction stories by Jerry Pournelle and others Tanith, a planet in the novel Space Viking by H. Beam Piper Tanith (Gaunt's Ghosts), the former homeworld of the Tanith First-and-Only, who are the subject of the Gaunt's Ghosts novels by Dan Abnett Tanith, a planet in David Brin's Uplift Universe
Other uses 5869 Tanith, an Amor asteroid discovered in 1988 by Carolyn S. Shoemaker