Menedemos was a trader from Rhodes during the Fourth Century BCE, who sailed the Mediterranean Sea during the Hellenistic Period of Ancient Greece. Little is actually known about him, including his birth and his death. Surviving documents of the era do reference him on occasion.
Menedemos was a scion of a family successful traders from the polis of Rhodes. He served as the captain aboard the family's ship, the Aphrodite. His cousin, the scholarly Sostratos, served as the ship's purser. Menedemos was rash and headstrong. While this attitude had secured him command of the Aphrodite, it also brought him trouble on occasion.