Flavius Mallius Theodorus

c. 376–409) was a Roman politician and author of an extant treatise on metres, De metris, one of the best of its kind (H. Keil, Grammatici Latini, vi.).

[1] Theodorus' life is known in detail thanks to Claudian's panegyric, Panegyricus dictus Manlio Theodoro consuli.

He allied to Stilicho[10] and from 397 to 399 held the post of Praetorian prefect of Illyricum, Italy and Africa (several laws conserved in the Codex Theodosianus were addressed to him in this period).

[3] In 399 he also held the consulate, together with Eutropius,[11] a powerful and hated high officer of the Eastern court, who was killed that same year.

Theodorus, who at the time had retired from the court, was one of the Christian platonic intellectuals that Augustine met in Milan.