Quaregnon is a municipality in Wallonia, the French-speaking southern region of Belgium. It is located in the province of Hainaut, in the western part of the country near the French border.
Like many municipalities in Hainaut, Quaregnon is part of the industrial and coal-mining belt that shaped the region's economy and settlement patterns from the nineteenth century onward. The area around it forms a dense network of towns and communes within the Borinage district, historically associated with coal extraction and heavy industry.
Quaregnon is administratively a single municipality, governed by a municipal council and a mayor, as is standard for Belgian communes. It lies within the arrondissement of Mons, the administrative district centred on the nearby city of Mons, which serves as the provincial capital of Hainaut.