Ammonius of Athens (/əˈmoʊniəs/; Greek: Ἀμμώνιος), sometimes called Ammonius the Peripatetic, was a philosopher who taught in Athens in the 1st century AD. He was a teacher of Plutarch, who praises his great learning, and introduces him discoursing on religion and sacred rites. Plutarch wrote a biography of him, which is no longer extant, and also mentioned Ammonius master in other works like the De E apud Delphos within the threaty series Moralia.