Morlanwelz (French pronunciation: [mɔʁlɑ̃we] ⓘ; Walloon: Marlanwé) is a municipality of Wallonia located in the province of Hainaut, Belgium.

On 1 January 2006 Morlanwelz had a total population of 18,595.

The total area is 20.26 km2 which gives a population density of 918 inhabitants per km2.

The municipality consists of the following districts: Carnières, Mont-Sainte-Aldegonde, and Morlanwelz-Mariemont.

This Hainaut Province location article is a stub.