Diego Sarmiento Valladares

Diego Sarmiento de Valladares (1615 – 29 January 1695) was a Spanish bishop who was Grand Inquisitor of Spain from 1669 to 1695.

He was closely related to Jose Sarmiento de Valladares y Arines Romay, 1st Duke of Atrisco and Viceroy of New Spain.

Charles II of Spain also named him president of the Council of Castile at this time, and he held that post until 1669.

He resigned his bishopric on 26 April 1677 but remained Grand Inquisitor until his death.

In this capacity, he oversaw one of the Spanish Inquisition's largest auto-da-fés of the seventeenth century, held in the Plaza Mayor, Madrid in 1680.