Baelen (French pronunciation: [balɛn]; Walloon: Bailou) is a municipality of Wallonia located in the province of Liège, Belgium.

On January 1, 2006, Baelen had a total population of 4,060.

The total area is 85.73 km2 which gives a population density of 47.36 inhabitants per km2.

The municipality consists of the following districts: Baelen and Membach.

Born in Baelen: Residing in Baelen: This Liège Province location article is a stub.