Nonius Atticus (floruit 383–397) was a politician of the Roman Empire.
He was Praetorian prefect of Italy between 383 and 384 and then Consul in 397. In 383 Emperor Gratian died, and his half-brother Valentinian II become the only Emperor. He then decided for a change among the high officers, who had served under Gratian, with new men, more loyal to him. Atticus then succeeded the praetorian prefect Sextus Claudius Petronius Probus, but one year later he was succeeded by Vettius Agorius Praetextatus, and his office was called an "interregnum".
- Nonius received Symmachus' letters VII 30-34 (Sergio Roda, Commento storico al Libro IX dell'Epistolario di Q. Aurelio Simmaco: introduzione, commento storico, testo, traduzione e indici, Giardini, 1981, p. 217).
- Maijastina Kahlos, Vettius Agorius Praetextatus - Senatorial Life in Between. Acta Instituti Romani Finlandiae, nr. 26, Rome 2002.
| Consul of the Roman Empire
Sextus Claudius Petronius Probus (II)
| Praetorian prefect of Italy
Vettius Agorius Praetextatus