Duke of Arión
| Dukedom of Arión | |
|---|---|
| Creation date | 20 September 1725 | 
| Created by | Philip V | 
| Peerage | Peerage of Spain | 
| First holder | Baltasar de Zúñiga y Guzmán, 1st Duke of Arión | 
| Present holder | Joaquín Fernández de Córdoba y Hohenlohe-Langenburg, 10th Duke of Arión | 
| Subsidiary titles | Marquess of Malpica, Marquess of Povar, Marquess of Valero, Count of Berantevilla. | 
| Former seat(s) | Palacio del Duque de Arión | 
Duke of Arión (Spanish: Duque de Arión) is an hereditary title in the Peerage of Spain accompanied by the dignity of Grandee, granted in 1725 by Philip V to Baltasar de Zúñiga, viceroy of New Spain.
The title makes reference to the town of Casasola de Arión, in the Province of Valladolid.