1st century BC) of Alexandria was a grammarian who taught at Rome in the reigns of the emperors Augustus and Tiberius.
[1][2] He was the son of the grammarian Artemidorus of Tarsus and the head of the school at Alexandria.
[4] It is doubtful whether he was the author of the comic lexicon quoted by the Scholiast to Apollonius Rhodius.
[6] In one of the Scholia on Aristophanes,[7] (the authenticity of which is debated)[8] Theon is mentioned as one of the commentators on Apollonius Rhodius.
It is possible, however, that one or both of these Commentaries on Homer and Apollonius, should be assigned to Aelius Theon, also of Alexandria.