Perwez (French pronunciation: [pɛʁwe]; Walloon: Perwé; Dutch: Perwijs, Dutch pronunciation: [pɛrˈʋɛis] ⓘ) is a municipality of Wallonia located in the Belgian province of Walloon Brabant.

The municipality consists of the following districts: Malèves-Sainte-Marie-Wastines, Orbais, Thorembais-les-Béguines, and Thorembais-Saint-Trond.

[3] In medieval times, Perwez often suffered from its position near the border between the Duchy of Brabant and the Prince-Bishopric of Liège.

The main source of wealth for Perwez was its market, which relied on agricultural products.

In 1870 there were two watermills, two windmills, two tanneries, three breweries and a râperie, linked to a central sugar factory.

On 13 May 1940, a French ammunition storage or mine in the center of town was hit and exploded.