In Greek mythology, Thestius (/ˈθɛstʃəs, ˈθɛstiəs/; Ancient Greek: Θέστιος) was a king of Pleuronians in Aetolia.[1] He is not to be confused with Thespius, who was sometimes referred to as "Thestius".[2] The patronymic "Thestias" may refer to one of his daughters, Leda or Althaea,[3] and "Thestiades" to his son Iphiclus.[4]