Mont-sur-Marchienne (French pronunciation: [mɔ̃ syʁ maʁʃjɛn]; Walloon: Mont-dzeu-Mårciene) is a town of Wallonia and a district of the municipality of Charleroi, located in the province of Hainaut, Belgium.

It was a municipality of its own before the merger of the municipalities in 1977.

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