Quévy (French pronunciation: [kevi]; Picard: Kévi) is a municipality of Wallonia located in the province of Hainaut, Belgium.

On 1 January 2006, Quévy had a total population of 7,734. The total area is 65.16 km which gives a population density of 119 inhabitants per km.

The municipality consists of the following districts: Asquillies, Aulnois, Blaregnies, Bougnies, Genly, Givry, Gœgnies-Chaussée, Havay, Quévy-le-Grand, and Quévy-le-Petit.

It is on the former main rail route between Brussels and Paris, and it was the virtual tariff border between the French SNCF and Belgian Railways SNCB.