Deinze is a city and municipality located in the Belgian province of East Flanders. As of January 1, 2022, the municipality had a total population of 44,315 residents.
The municipality covers a total area of 128.03 km² (49 sq mi), resulting in a population density of 342 inhabitants per km². In addition to the city of Deinze, the municipality comprises the towns of Astene, Bachte-Maria-Leerne, Gottem, Grammene, Hansbeke, Landegem, Meigem, Merendree, Nevele, Petegem-aan-de-Leie, Poesele, Sint-Martens-Leerne, Vinkt, Vosselare, Wontergem, and Zeveren.