Tantalus (Ancient Greek: Tántalos) was a Greek mythological figure, most famous for his eternal punishment in Tartarus. He was also called Atys.
He was made to stand in a pool of water beneath a fruit tree with low branches, with the fruit ever eluding his grasp, and the water always receding before he could take a drink.
He was the father of Pelops, Niobe and Broteas, and was a son of Zeus and the nymph Plouto. Thus, like other heroes in Greek mythology such as Theseus and the Dioskouroi, Tantalus had both a hidden, divine parent and a mortal one.
According to other sources, his father was Tmolus or Manes, the first king of Lydia.