11th-century BC Greek people

Eurysthenes (, "widely ruling") was king of Sparta and one of the Heracleidae in Greek mythology. He was a son of Aristodemus and Argia, daughter of Autesion. He had a twin brother, Procles. Together they received the land of Lacedaemon after Cresphontes, Temenus and Aristodemus defeated Tisamenus, the last Achaean king of the Peloponnesus. Eurysthenes married Lathria, daughter of Thersander, King of Kleonae, sister of his sister-in-law Anaxandra, and was the father of his successor, Agis I, founder of the Agiad dynasty of the Kings of Sparta.