Uta-napishtim or Utnapishtim (Akkadian: 𒌓𒍣, "he has found life") was a legendary king of the ancient city of Shuruppak in southern Iraq, who, according to the Gilgamesh flood myth, one of several similar narratives, survived the Flood by making and occupying a boat.
He is called by different names in different traditions: Ziusudra ("Life of long days", rendered Xisuthros, Ξίσουθρος in Berossus) in the earliest, Sumerian versions, later Shuruppak (after his city), Atra-hasis ("exceeding wise") in the earliest Akkadian sources, and Uta-napishtim ("he has found life") in later Akkadian sources such as the Epic of Gilgamesh. His father was the king Ubar-Tutu ("Friend of the god Tutu").