The Oratory of Eternal Wisdom was a confraternity in Milan between 1500 and 1530. It was founded by Giovanni Antonio Bellotti of Ravenna, commendatory abbot of the Augustinian friars of Saint Antoine de Grenoble. Amidst the ongoing Italian Wars, he had been sent to Milan by Joan of France in order to foster spiritual renewal and peace. The confraternity practised the Forty Hours' Devotion.