Agnes (, ; c.1105–c.1159) was Queen of Aragon during her brief marriage to King Ramiro II, a former monk. The couple separated after the birth of their only child, Queen Petronilla, and retired to monasteries. Agnes chose the Abbey of Fontevraud, from where she continued to take part in the affairs of her sons from her first marriage to Aimery V, Viscount of Thouars.