Lierneux (; ) is a municipality of Wallonia located in the province of Liège, Belgium.
On January 1, 2006, Lierneux had a total population of 3,367. The total area is 92.08 km<sup>2</sup> which gives a population density of 37 inhabitants per km<sup>2</sup>. Lierneux is known for its psychiatric hospital CHS l'Accueil.
The municipality consists of the following districts: Arbrefontaine, and Bra, and Lierneux.
History
Within the bounds of the municipality a lies a memorial site to the tribute of the 82nd Airborne Division who won the Battle of the Bulge against the German SS division December 22, 1944.
See also
- List of protected heritage sites in Lierneux