San Leonardo de Yagüe is a Spanish town and municipality located in the Province of Soria, part of the autonomous community of Castile and León. It is one of the most populated municipalities of the Sorian county of "Pinares".
It has primary and secondary schools (I.E.S. "San Leonardo"), attended by students from surrounding municipalities (Navaleno, Hontoria del Pinar, Casarejos, Espeja, Espejón,La Hinojosa, etc.)
The town, which has about 2,500 inhabitants, is home to timber products factory Puertas Norma, a manufacturer of doors and pre-hung door units. The factory employs about 700 workers.