The siege of Oldenzaal was a short siege that took place during the Eighty Years' War and the Anglo–Spanish War by a Dutch and English army led by Maurice of Orange of the city of Oldenzaal from 20 to 23 October 1597. The city surrendered to the overwhelming Dutch and English force. The siege was part of Maurice's campaign of 1597 known as the Ten Glory Years, his highly successful offensive against the Spaniards.

The siege of Lingen took place during the Eighty Years' War and the Anglo–Spanish War by a Dutch and English army led by Maurice of Orange. Frederik van den Bergh defended Lingen for Philip II of Spain which was besieged from 25 October 1597. After a siege of more than two weeks, Van den Bergh surrendered on 12 November 1597. The siege was part of Maurice's successful 1597 campaign against the Spaniards.