Sitalces () was apparently a prince of the Odrysian royal house, possibly even the son of Cersobleptes. He was leader of a body of Thracian light-armed troops (javelin-men, "akontistai"), who accompanied Alexander the Great as auxiliaries on his expedition to Asia. They played a valuable role in various battles, including the battles of Issus and Arbela. Alexander took the sons of Thracian kings with him to ensure the loyalty of their fathers at home.