San Leonardo de Yagüe is a Spanish town. It is one of the most populated municipalities of the Sorian area of "Pinares".
It has a quite large industry (Puertas "Norma") of about 500 workers. It also has an institute (I.E.S. "San Leonardo") to which students go from this and surrounding villages (Navaleno, Hontoria del Pinar, Casarejos, Espeja, Espejón, etc.)