Duke of Santisteban del Puerto (Spanish: Duque de Santisteban del Puerto) is a hereditary title in the Peerage of Spain accompanied by the dignity of Grandee, granted in 1738 by Philip V to Manuel de Benavides, 10th Count of Santisteban del Puerto and Brigadier of the Spanish Army.

[2][3] The title makes reference to the town of Santisteban del Puerto in Jaén.

The title of Count of Santisteban del Puerto was awarded by King Henry IV of Castile on 21 September 1473 to Diego Sánchez de Benavides while the Grandee of Spain, was awarded to this Francisco IV de Benavides y Dánila, 9th Count by King Charles II of Spain on 8 July 1696.

Moreover, on 20 August 1738 the 10th Count, Francisco IV's son, Manuel de Benavides y Aragon, (1683–1748) would be promoted to 1st Duke of Santisteban del Puerto, by King Philip V of Spain, for his services as a Spanish Army Brigadier in several battles in Italy.