Saint-Nicolas (French pronunciation: [sɛ̃ nikɔla]; Walloon: Sint-Nicolai-dlé-Lidje) is a municipality of Wallonia located ine the province of Liège, Belgium.

The total area is 6.84 km2 which gives a population density of 3,313 inhabitants per km2.

It has the highest population density of any Belgian municipality outside the Brussels-Capital Region.

Since 1977 the municipality consists of the following districts: Montegnée, Saint-Nicolas, and Tilleur.

Well known natives include This Liège Province location article is a stub.