The Siege of Valenciennes, 28 February to 17 March 1677, took place during the 1672 to 1678 Franco-Dutch War. Valenciennes, then in the Spanish Netherlands, was assaulted by a French army under Luxembourg, with siege operations conducted by Vauban.
Over the winter of 1676 to 1677, Valenciennes had been subjected to a tight blockade, preventing the receipt of reinforcements or supplies. With no hope of support, the town surrendered on 17 March, and was formally ceded by Spain to France under the August 1678 Treaty of Nijmegen.
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