Juan Yagüe y Blanco, 1st Marquis of San Leonardo de Yagüe (19 November 1891 – 21 October 1952) was a Spanish army officer during the Spanish Civil War, one of the most important in the Nationalist side.
He became known as the "Butcher of Badajoz" (carnicero de Badajoz) because he ordered thousands killed, including wounded men in the hospital.