The Bua (also Boua) were a medieval Albanian tribe. The name is first attested in 14th-century historical documents as one of the Albanian tribes living in the Despotate of Epirus. Later on, the Bua settled southwards in the Peloponnese, and a part of them found refuge in Italy in the Arbëreshë migrations that followed the Ottoman conquest of the Balkans. A branch of the tribe regiments was ennobled in the Holy Roman Empire after its service in the Stratioti, a Balkan mercenary unit. Mercurio Bua (1478 –c. 1542), its most prominent member, was Count of Aquino and Roccasecca.