Erquelinnes (French pronunciation: [ɛʁkəlin] ⓘ; Walloon: Erkelene) is a municipality of Wallonia located in the province of Hainaut, Belgium.

Located on the border with France, where the commune of Maubeuge lies, Erquelinnes had a total resident population of 9,549, in 2006.

The total area is 44.23 km2 (17.08 sq mi) which gives a population density of 216 inhabitants per km2.

The municipality consists of the following districts: Bersillies-l'Abbaye, Erquelinnes, Grand-Reng, Hantes-Wihéries, Montignies-Saint-Christophe, and Solre-sur-Sambre.

This Hainaut Province location article is a stub.