Roger of Lauria (c. 1245 - 17 January 1305), was a Calabrian knight who served the Crown of Aragon as admiral of the Aragonese navy during the War of the Sicilian Vespers. He was probably the most successful and talented naval tactician of the Middle Ages. He is known as Ruggero or Ruggiero di Lauria in Italian and Roger de Llúria in Catalan.