Baduarius (Greek: Βαδουάριος) was an East Roman aristocrat, the son-in-law of Byzantine emperor Justin II (r. 565–578 AD).
[1] Possibly the son or grandson of a similarly named general active in Scythia Minor in 528, Baduarius is recorded by the Latin epic poet Flavius Cresconius Corippus as having succeeded Justin in his post as curopalates immediately after the latter's rise to the Byzantine throne on November 14, 565.
The Byzantines won the first battle, but then the Gepid king Cunimund refused to hand back Sirmium as he had promised.
Left unaided against the Lombards and Avars, Cunimund was defeated and killed.
[2] A comes stabuli ("count of the imperial stables") in 573, he was sent to Italy soon after to resist the Lombard conquest of the peninsula.