The Metz–Luxembourg railway is a 72-kilometre-long (45 mi) French/Luxembourgish railway line, that connects the French Lorraine region to Luxembourg.

[3] It is an important international railway connection.

The part in Luxembourg is designated as CFL Line 90.

[4] The line leaves Metz in a northern direction, downstream along the Moselle river.

It passes through the industrial area between Metz and Thionville.