Archagathus (Greek, Ancient (to 1453);: Ἀρχάγαθος, fl. 4th century BC) was a Syracusan Greek Prince of Magna Graecia. He was the son of Archagathus by a wife whose name is unknown, being a paternal grandson of the Greek tyrant (and later "king" of Sicily) Agathocles of Syracuse from his first wife.[1]
Archagathus was described as a youth of great bravery and daring.[1] After the death of his father in 307 BC, Archagathus murdered his paternal uncle Agathocles, so that he would succeed his paternal grandfather.[1] After the death of his paternal uncle, he was in turn murdered by a local Greek citizen called Maemon.[1]