Duke of Segorbe () is an hereditary title in the peerage of Spain, accompanied by the dignity of Grandee and granted in 1469 by John II of Aragon to his nephew, Enrique de Aragón, son of Infante Henry, Duke of Villena by his second wife, Beatriz de Pimentel (1416-1490), from whom the Ducal line of the House of Medinaceli descends.
Don Ignacio Medina y Fernández de Córdoba (b. 1947) succeeded in 1969 as 19th Duke of Segorbe before marrying Princess Maria da Glória of Orléans-Braganza (b. 1946), former wife of Alexander, Crown Prince of Yugoslavia, in 1985.
The Duke and Duchess of Segorbe have two daughters:
As with other Spanish noble titles, the dukedom of Segorbe descended according to cognatic primogeniture, meaning that females could inherit the title if they had no brothers (or if their brothers had no issue). That changed in 2006, since when the eldest child (regardless of gender) can automatically succeed to noble family titles.