| Agesilaus I | |
| Succession: | King of Sparta |
| Reign: | c. 820 – 790 BC |
| Predecessor: | Doryssus |
| Successor: | Archelaus of Sparta |
Agesilaus I (; grc|Ἀγησίλαος), son of Doryssus, was the 6th king of the Agiad line at Sparta, excluding Aristodemus. According to Apollodorus of Athens, he reigned forty-four years, and died in 886 BC. Pausanias makes his reign a short one, but contemporary with the legislation of Lycurgus.[1] [2] He was succeeded by his son Archelaus. His grandson was Teleclus.