There were two important Greek figures named Menander, a playwright and a rhetorician.
The playwright Menander, possibly son of the wealthy Athenian general Diopeithes, lived from approximately 342 to 291 BC. An associate of Theophrastus and admirer of Euripides, was a practitioner of a genre known as `new comedy`, a genre focussed on domestic rather than political humour, and lacking a chorus. His works portrayed ordinary people rather than the gods and heroes of tragedy. Substantial parts of a few of his works have been discovered on papyrus in the past 50 years, greatly increasing our knowledge of new comedy.
The late antique rhetorician Menander is probably not the author of the treatises on epideictic which have been transmitted under his name, but was an important commentator on Demosthenes.