Flavius Bauto (died c. 385) was aRomanisedFrank who served as amagister militum of theRoman Empire and was a powerful figure in the court of emperorValentinian II.

In 381, during theGothic War (376-382), Bauto was sent by western emperor Gratian with an expeditionary field army to aid the eastern emperor, Theodosius I.^[1] As is common, the sources do not explicitly name him amagister militum, but the importance of this mission makes it very likely.

Gratian was defeated and killed in 383 by the usurperMagnus Maximus, who established himself as emperor in Britain and Gaul. Emperor Valentinian II, previously subordinate to his half-brother Gratian, now became the technical senior ruler, although his authority was limited to Italy and he suffered from a reputation for weakness, stemming from his accession to the throne as a child. Thus, powerful ministers like Bauto were able to exert a great deal of control over Valentinian's regime.^[2]

For example, Bauto organized the defense of Italy, and was given the prestigiousconsulship in 385, although he was not the first pick for the position.^[2][3] According to bishopAmbrose, Maximus accused Bauto of attacking him with barbarian troops and intending to use Valentinian II as a puppet emperor to acquire power for himself.^[4] In matters of religion, it is unclear whether Bauto was aGreco-Roman polytheist or aChristian.^[5][2] He andRumoridus, who was definitely a polytheist, were present before Valentinian II when Ambrose successfully convinced the emperor againstQuintus Aurelius Symmachus' proposal to restore the paganAltar of Victory, which had been earlier removed from theCuria Julia. Afterwards, the two men went along with Valentinian II's decision.^[6] If Bauto was a polytheist and had supported restoring the Altar, his power must have been limited in some aspects.

He died sometime after 385, with no foul play recorded in the sources.^[2] Afterwards, his daughterAelia Eudoxia resided in the house of a son of Promotus, a nemesis ofRufinus, and later married EmperorArcadius in 395, becoming one of the more powerful empresses of the period. His military office was succeeded byArbogastes, who went on to influence Valentinian II and is claimed byJohn of Antioch to be Bauto's son.^[3][a]

• Cameron, Alan (2010).The Last Pagans of Rome. Oxford University Press.ISBN 978-0-19-974727-6.
• Jones, A.H.M.;J.R. Martindale &J. Morris (1971).Prosopography of the Later Roman Empire. Vol. 1. Cambridge University Press.ISBN 0-521-07233-6.
• Bendle, Christopher (2024).The Office of "Magister Militum"in the 4th Century CE: A Study into the Impact of Political and Military Leadership on the Later Roman Empire. Franz Steiner Verlag.

• 380s deaths
• 4th-century Frankish people
• 4th-century Roman consuls
• Frankish warriors
• Generals of Theodosius I
• Magistri militum

• Articles with short description
• Short description is different from Wikidata
• Year of death uncertain
• Year of birth unknown