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, aka, Albertezzo II, was a powerful nobleman in the Holy Roman Empire.
The rulers of the whole area (except for the new delta of the Po) were the Este; the area was formerly named County of Gavello, but two centuries after the disaster and due to the decline of the Abbey of Gavello it started being named County of Rovigo.