Pausanias (; died c. 470 BC) was a
Spartan of the 5th century BC. He was a scion of the royal house of the
Agiads but was not in the direct line of succession: he was the son of
Cleombrotus and nephew of
Leonidas I, and served as
regent after the latter's death, since Leonidas' son
Pleistarchus was under age. Pausanias was also the father of
Pleistoanax, who later became king, and Cleomenes. Pausanias was leader at the
Greek victory over
Mardonius and the
Persians at the
Battle of Plataea in 479 BC, and was the leader of the Hellenic League created to resist Persian aggression during the
Greco-Persian Wars.