シロ

thumb|Stone commemorating Silo's foundation of the church of Santianes de Pravia. Beginning with the central "S" and moving in any direction spells Silo princeps fecit (Prince Silo made [it]). thumb|The Church of San Juan Apóstol y Evangelista, Santianes de Pravia, founded by Silo. thumb|Presumed tombs of Adosinda and Silo in the church of Santianes de Pravia. Silo (died 783) was the king of Asturias from 774 to 783, succeeding Aurelius.

He came to the throne upon his marriage to Adosinda, daughter of Alfonso I ("Alfonso the Catholic"). He moved the capital of the Kingdom of Asturias from Cangas de Onís to Pravia, closer to the center of the kingdom. He was a contemporary of Abd al-Rahman I, Umayyad Emir of Córdoba, and of Charlemagne.