Tournai is a city and municipality located in the Wallonia region of Belgium, specifically within the Province of Hainaut. It is situated on the river Scheldt, approximately 89 km (55 mi) by road southwest of Brussels. The city serves as an integral part of the Eurometropolis Lille–Kortrijk–Tournai.
As of 2022, the municipality of Tournai had an estimated population of 68,518 people. It is distinguished by its geographic position along the Scheldt river and its membership in a larger cross-border metropolitan area.