Simmias of Rhodes, was a Greek poet and grammarian of the Alexandrian school, which flourished under the early Ptolemies. He was earlier than the tragic poet Philiscus of Corcyra, whose time is about 300 BC, at least if we accept the assertion of Hephaestion (p. 31), that the choriambic hexameter, of which Philiscus claimed the invention, had been previously used by Simmias.