Heusy is a district in the municipality of Verviers, located in the province of Liège in the Wallonia region of Belgium. It lies just south of the city centre of Verviers, to which it is administratively attached rather than forming a separate municipality.
The area sits in the valley of the Vesdre river, in the eastern part of Wallonia close to the border with Germany. Like the wider Verviers region, Heusy was historically associated with the wool and textile industry that made Verviers a significant manufacturing centre in the nineteenth century.
Today Heusy is largely a residential quarter on the southern edge of Verviers, with its own parish church and local amenities, and it is connected to the rest of the city by road and public transport.