Leuze-en-Hainaut is a Walloon municipality of Belgium, in the province of Hainaut. It consists of the former municipalities of Leuze-en-Hainaut, Grandmetz, Thieulain, Blicquy, Chapelle-à-Oie, Chapelle-à-Wattines, Pipaix, Tourpes, Willaupuis and Gallaix. Its population is 13,223.