The Battle of Araviana was a cavalry action fought during the War of the Two Peters on 22 September 1359. Eight hundred Aragonese horse, many of them Castilian exiles in service of the Crown of Aragon under Henry of Trastámara, had launched a cavalgada in Castilian territory when, near the Castilian town of Ágreda, confronted and routed a Castilian force under Juan Fernández de Henestrosa set to guard the frontier. Numerous Castilian noblemen and knights were killed, including Henestrosa, while many other were captured.