In Greek mythology, Protesilaus /prəˌtɛsɨˈleɪəs/ (Ancient Greek: Πρωτεσίλᾱος, Prōtesilāos) was a hero in the Iliad who was venerated at cult sites in Thessaly and Thrace. Protesilaus was the son of Iphicles, a "lord of many sheep"; as grandson of the eponymous Phylacos, he was the leader of the Phylaceans.