Juan Claros Pérez de Guzmán y Fernández de Córdoba, 11th Duke of Medina Sidonia (1642–1713) was a Spanish noble who became Duke of Medina Sidonia in 1667 upon the death of his half-brother Gaspar Juan Pérez de Guzmán, 10th Duke of Medina Sidonia.
- Position held
- caballerizo mayor del rey, mayordomo mayor of the King of Spain, viceroy of Catalonia
- Born
- March 19, 1642
- Died
- December 17, 1713
