The Siege of Cambrai took place from 20 March to 19 April 1677 during the 1672-1678 Franco-Dutch War; then part of the Spanish Netherlands, it was invested by a French army under the duc de Luxembourg. Siege operations were supervised by the military engineer Vauban; Louis XIV was nominally in command but played little part in operations.

An attempt by a combined Dutch-Spanish force under William of Orange to relieve the nearby town of Saint-Omer was defeated by Luxembourg at Cassel on 11 April. Cambrai surrendered on 19 April and was ceded to France by Spain in the September 1678 Treaty of Nijmegen.