The old monastery of San Juan de Ortega is a Romanesque monument in Barrios de Colina, in the province of Burgos, Spain. It is commonly believed that it was built by Saint John of Ortega himself, with the help of his friend and fellow saint, Domingo de la Calzada, as a help point to the pilgrims who walked to Santiago de Compostela along the Way of Saint James. Today, pilgrims are still received in the former monastery.
The church is an example of late Romanesque art, the illustrated capitals deserve special mention, as well as the tomb of the Saint, in the crypt.