Alonso Pérez de Guzmán, 7th Duke of Medina Sidonia, Spanish general (died 1615)

Alonso Pérez de Guzmán y de Zúñiga-Sotomayor, 7th Duke of Medina Sidonia, GE, was a Spanish aristocrat who was most noted for his role as commander of the Spanish Armada that was to attack the south of England in 1588. He was a great-great grandson of Ferdinand II of Aragon.