The siege of Breda of 1624–25 occurred during the Eighty Years' War. The siege resulted in Breda, a Dutch fortified city, falling into the control of the Army of Flanders.
Following the orders of Ambrogio Spinola, Philip IV's army laid siege to Breda in August 1624. The siege was contrary to the wishes of Philip IV's government because of the already excessive burdens of the concurrent Eighty and Thirty Years' wars. The strategically located city was heavily fortified and strongly defended by a large and well prepared garrison of 7,000 men, that the Dutch were confident would hold out long enough to wear down besiegers while awaiting a relief force to disrupt the siege. Yet despite the Spanish government's opposition to major sieges in the Low Countries and the obstacles confronting any attack on such a strongly fortified and defended city, Spinola launched his Breda campaign, rapidly blocking the city's defences and driving off a Dutch relief army under the leadership of Maurice of Nassau that had attempted to cut off the Spanish army's access to supplies.