Xenophon of Ephesus (fl. 2nd century–3rd century?) was a Greek writer. His surviving work is the Ephesian Tale of Anthia and Habrocomes, one of the earliest novels as well as one of the sources for Shakespeare's Romeo and Juliet.
He is not to be confused with the earlier and more famous Athenian soldier and historian, Xenophon.
Of Ephesus, a writer of prose fiction, as to whose date and personality nothing is known. His remaining work is entitled Ephesiaca, or the Loves of Anthia and Abrocomas (Ἐφεσιακὰ, τὰ κατὰ Ἀνθίαν καὶ Ἀβροκόμην). The style of the work is simple, and the story is conducted without confusion, notwithstanding the number of personages introduced; but the adventures are of a very improbable kind. Xenophon was possibly the oldest of the Greek romance writers. Editions of his work are those by Peerlkamp (Haarlem, 1818); and by Passow (Leipzig, 1833). See Novels and Romances.