Francisco Xerez, Francisco de Jerez, or Francisco de Xerxes (1495–1565?) was a Spanish explorer-turned-historian, the personal secretary of conquistador Francisco Pizarro. He participated in the conquest of Peru during the first two unsuccessful expeditions led by Pizarro, Diego de Almagro and Hernando de Luque in 1524. Xerez did not stay and join The thirteen of the fame in the Isle of Gallo (1526).