Petite-Synthe (; ) is a former commune of the Nord département in northern France. The commune of Saint-Pol-sur-Mer was created in 1877, by its territory being detached from Petite-Synthe. In 1971 the commune of Dunkerque absorbed Petite-Synthe and Rosendaël. In 1980, a large part of Petite-Synthe was detached from Dunkerque and merged into Grande-Synthe. Heraldry References Dunkirk Former communes of Nord (French department) French Flanders