Alfonso of Aragon may refer to:

Kings of Aragon

Alfonso I the Battler Alfonso I (''c''. 1073/10747 September 1134), called the Battler or the Warrior ( es, el Batallador), was King of Aragon and Kingdom of Navarre, Navarre from 1104 until his death in 1134. He was the second son of King Sancho Ramírez and successo ...

(. 1104–1134) * Alfonso II the Chaste or the Troubadour (r. 1164–1196) * Alfonso III the Liberal or the Free (r. 1285–1291) * Alfonso IV the Kind (r. 1327–1336) * Alfonso V the Magnanimous (r. 1416–1458)

Princes (Infantes) of Aragon

* Alfonso (1332–1412), duke of Gandia, count of Denia, count of Ribagorza, marquis of Villena, constable of Castile * Alfonso (1358–1422), duke of Gandia, count of Denia, count of Ribagorza * Alfonso (1417–1495), duke of Villahermosa, count of Ribagorza and Cortes, baron of Arenos, grand master of the Order of Calatrava * Alonso or Alfonso (1470–1520), archbishop of Zaragoza and Valencia and lt. general of Aragon * Alfonso (1481–1500), duke of Bisceglie and prince of Salerno {{hndis