Diego Pisador (1509/10? – after 1557) was a Spanish vihuelist and composer of the Renaissance.Little is known of the details of Pisador's life, not even the exact dates of his birth and death. It is known that he was born in Salamanca around the years 1509 or 10. He was the oldest son of Alonso Pisador and Isabel Ortiz, who married in 1508. Ortiz's father, Alfonso III of Fonseca, Archbishop of Santiago, was a great patron of music. Alonso Pisador worked as a notary in the audience of the archbishop and, in 1524, he moved to Toledo, following his steps. There he entered the service of the count of Monterrey, possibly Alonso de Acevedo y Zúñiga, who was also a grandson of Alfonso III. In 1526 Pisador took minor orders, but did not continue in an ecclesiastical career.