Alberto Azzo II (997 or July 10, 1009, Modena – August 20, 1097, Modena), Margrave of Milan, and Liguria, Count of Gavello and Padua, Rovigo, Lunigiana, Monselice, and Montagnana, was a powerful nobleman in the Holy Roman Empire.
He is considered the founder of Casa d'Este (House of Este), having been head of the first family to be master of Este, a town of Padua.