Musson (French pronunciation: [mysɔ̃]; Walloon: grand Mson; Luxembourgish: Ëmsong) is a municipality of Wallonia located in the province of Luxembourg, Belgium.

Other population centers include: Baranzy, Gennevaux, Signeulx, and Willancourt.

There is one major national road that passes Musson proper.

Furthermore, the N82 crosses the municipality shortly, for about 800m, in the northwest, but does not serve any population centers.

Messancy is served by the Walloon transport authority TEC with following bus lines:[4] Musson is crossed by the railway line 165 between Virton and Aubange, but there are no active train stations.