Plombières (; or Bleiberg, ; ) is a municipality of Wallonia located in the province of Liège, Belgium.
On 1 January 2006, Plombières had a total population of 10,401. The total area is 53.17 km<sup>2</sup> which gives a population density of 200 inhabitants per km<sup>2</sup>.
The municipality consists of the following districts: Gemmenich, Hombourg, Montzen, Moresnet, and Sippenaeken.
The local language is Low Dietsch, a bridge dialect between East Limburgish and Ripuarian.