Adosinda was the queen of Asturias during the reign of her husband, Silo, from 774 to 783. She was a daughter of Alfonso I and Ermesinda, daughter of the first Asturian king, Pelayo. She was a sister of Fruela I.
Her husband probably succeeded in becoming King because he was related by marriage to both of the previous ruling families. Some scholars have even posited a matrilineal succession. Since she gave Silo no heir, her nephew Alfonso II was proclaimed king upon his death. He was expelled from the realm by Mauregatus, and on November 26 783 Adosinda was put in the monastery of San Juan de Pravia, where she lived out the rest of her life.