Duke of Peñaranda de Duero (Spanish: Duque de Peñaranda de Duero), commonly known as Duke of Peñaranda, is a title of Spanish nobility that is accompanied by the dignity of Grandee of Spain.

It was granted to Juan de Zúñiga y Bazán on 22 May 1608 by king Philip III.

[2] Juan de Zúñiga was Viceroy of Catalonia and Viceroy of Naples.

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