Usdibad ( Latin: Usdibadus, Uzdibaldus; [a] fl. 566–567) was a Gepid military commander ( dux) and fugitive that received refuge by Byzantine Emperor Justin II (r. 565–574) during the Lombard–Gepid War (567).
In 566, Lombard king Alboin concluded a treaty with the Pannonian Avars, to whom he promised the Gepids' land in case they won over them. [1] The Gepids were destroyed by the Avars and Lombards in 567. [1] [2] Gepid king Cunimund was killed by Alboin himself. [1] The Avars now occupied "Gepidia", forming the Avar Khaganate. [1] The Byzantine Emperor intervened and took control of Sirmium (now Sremska Mitrovica, Serbia), also giving refuge to Gepid leader Usdibad, but the rest of Gepidia was taken by the Avars. [2] According to István Bóna, Usdibad was probably a secret rival of Cunimund, and crossed the Sava to the Byzantines after the defeat. [3]