The Liège–Maastricht railway (line 40 in the Belgian numbering plan) is a railway line running from Liège in Belgium to Maastricht in the Netherlands.

For a very small part, it runs through the Belgian province of Limburg (near the village of Moelingen).

The main interchange stations on the Liège–Maastricht railway are: Local stations are in Bressoux and Visé, Belgium, and in Eijsden and Randwyck on the Dutch side.

The line has overhead power at 1,500 V DC in the Netherlands and 3,000 V DC in Belgium; the break of voltage occurs just to the North of the frontier, on Dutch territory.

This European rail transport related article is a stub.