The Battle of the Gulf of Naples was a naval engagement during the War of the Sicilian Vespers. Fought on 5 June 1284 in the south of the Gulf of Naples, the battle saw an Aragonese–Sicilian fleet commanded by Roger of Lauria defeat a Angevin fleet commanded by Prince Charles of Salerno. Charles was captured during the battle, and the Aragonese victory helped secure Aragonese control of the sea around Sicily.