545 BC-469 BC) was the ruler of Sparta from 491 BC-476 BC.
Born in Sparta around 545 BC, Leotychidas was a descendent of the house of Eurypontid and came to power with the help of Cleomenes I by challenging Demaratus for the throne of Sparta in 491 BC.
In 476 BC Leotychidas led an expedition to Thessaly against the Aleudae family for collaboration with the Persians but withdrew after being bribed by the family.