Don Baltasar de la Cueva y EnrĂquez de Cabrera, iure uxoris Count of Castellar and Marquis of MalagĂłn (sometimes Baltasar de la Cueva EnrĂquez de Cabrera y Arias de Saavedra) (1626 in Madrid – April 2, 1686) was viceroy of Peru from August 15, 1674 to July 7, 1678.
He was a younger son of the 7th Duke of Alburquerque, and brother of Francisco Fernández de la Cueva, 8th Duke of Alburquerque, who served as Viceroy of New Spain.
He married Teresa MarĂa Arias de Saavedra, 7th Countess of Castellar.