Marchin (French pronunciation: [maʁʃɛ̃]; Walloon: Mårcin) is a municipality of Wallonia located in the province of Liège, Belgium.

On January 1, 2006, Marchin had a total population of 5,114.

The total area is 30.00 km2 which gives a population density of 170 inhabitants per km2.

The municipality consists of the following districts: Marchin, and Vyle-et-Tharoul.

This Liège Province location article is a stub.