Duke of Gandía (Valencian: Ducat de Gandia, IPA: [duˈkad de ɣanˈdi.a]) is a title of Spanish nobility that was first created in 1399 by Martin of Aragon and granted to Alfonso of Aragon and Foix.

It has its origin in the lordship of Gandía created in 1323 by James II of Aragon.

[2] The dukedom then went to Pier Luigi's half-brother Giovanni Borgia.

The fourth duke was the religious figure Francesco Borgia.

On 20 December 1483, the title was re-established by Ferdinand II of Aragon and granted to the House of Borgia, of Spain and Italy.