Baduarius (Greek: Βαδουάριος) was a Byzantine general, active early in the reign of Justinian I (r. 527–565) in Scythia Minor (modern Dobruja).
In 528, Baduarius and Godilas led a military expedition from Odessus (modern Varna) against the Huns of Crimea.
Under their leader Mougel, the Huns had reportedly captured Byzantine areas on the coasts of the Black Sea.
Malalas reports "the Huns", whom Theophanes identifies as Bulgars, invading Scythia and Moesia.
The Prosopography of the Later Roman Empire considers it likely the younger man could be a son or grandson of the stratelates of Scythia.