The Duke of Cuenca is a noble title in Spain, historically associated with the city of Cuenca. The title was first granted in 1474 by King Henry IV of Castile to Juan Pacheco, a prominent nobleman. The dukedom has a rich history, often linked to the Spanish aristocracy and the political landscape of the time. The title has been held by various individuals over the centuries, with the current holder being Don Luis de la Cerda y de la Vega. The Duke of Cuenca is part of the broader Spanish nobility, which includes various titles and ranks, reflecting Spain's complex social hierarchy.