Theux (French pronunciation: [tø]; Walloon: Teu) is a municipality of Wallonia located in the province of Liège, Belgium.

The total area is 83.36 km2, giving a population density of 139 inhabitants per km2.

The municipality consists of the following districts: La Reid, Polleur, and Theux (including the hamlet of Tancrémont).

In World War II, the 75th Division of the U.S. Army, 575th Signal Co., maintained its command post in the town from January 10–12, 1945, as it counterattacked against the German army in the Battle of the Bulge.

This Liège Province location article is a stub.