San Millán may refer to:
Places San Millán de la Cogolla, a village in La Rioja, Spain San Millán de Lara, a village in Burgos, Spain San Millán de Juarros, a village in Burgos, Spain. San Millán de los Caballeros, a village in León, Spain Pico San Millán, a mountain in Sierra de la Demanda, highest peak of Burgos.
Persons Áurea of San Millán, or Saint Aurea, female saint from 11th century Spain Emilian of Cogolla, or San Millán, saint from 5th or 6th century in Spain
Institutions Monasteries of San Millán de la Cogolla, the San Millán de Suso and San Millán de Yuso monasteries