Écaussinnes is a Walloon municipality located in the Belgian province of Hainaut. On January 1, 2006, Écaussinnes had a total population of 9,924. The total area is 34.77 km² which gives a population density of 285 inhabitants per km².
The municipality consists of the following sub-municipalities: Écaussinnes-d'Enghien, Marche-lez-Écaussinnes, and Écaussinnes-Lalaing.
The city hosts the "Oberbayern" Festival each year in August, and hosted the Spring Blues Festival from 1988 to 2013.
Nearly 100 local citizens were saved from being killed by the German army by the intercession of Qian Xiuling. There is a street named Rue Perlinghi in her honour. "Perlinghi" was her married name.