Roger de Montgomery (died 1094), also known as Roger the Great, was the first Earl of Shrewsbury, and Earl of Arundel, in Sussex. His father was Roger de Montgomery, seigneur of Montgomery, a member of the House of Montgomery, and was probably a grandnephew of the Duchess Gunnor, wife of Duke Richard I of Normandy, the great-grandfather of William the Conqueror. The elder Roger had large landholdings in central Normandy, chiefly in the valley of the River Dives, which the younger Roger inherited.