The siege of Bergen op Zoom was a siege that took place between September 23 - November 13, 1588, during the Eighty Years' War and the Anglo–Spanish War. The siege took place in the aftermath of the Spanish Armada when famed commander Alexander Farnese, the Duke of Parma attempted to use his forces to besiege Bergen op Zoom, which was held by an Anglo-Dutch force under Thomas Morgan and Peregrine Bertie. An English officer named Grimstone, claiming to be a disaffected Catholic, had set up a trap during which a large Spanish assault was bloodily repulsed. An Anglo-Dutch relief column under the command Maurice of Orange arrived soon after and forced the Duke of Parma to retreat, thus ending the siege.

Bergen op Zoom is a city and municipality in the Southwestern Netherlands. It is located in the province of North Brabant, at the provincial border with Zeeland. In January 2021, the municipality had a population of 67,514.