Simeon Seth(i) or Symeon Seth(i) (Greek: Συμεὼν Μάγιστρος Ἀντιοχείας τοῦ Σήθι, "Symeōn Magister of Antioch, son of Sēth", sometimes also "Simeo" and "Sethus") was an 11th-century Jewish Byzantine doctor, scholar, and grand Chamberlain (protovestiarius) under Emperor Michael VII Doukas, originally from Antioch. He was a contemporary of Michael Psellos. He learned astronomy from Arabic sources and translated the book of fables Kalilag and Damnag from Arabic to Greek in about 1080. The protagonists in the Greek version are named "Stephanites" and "Ichnelates" (TLG 3113.001).