The National Company of Light Railways was a state-owned transportation provider which comprised a system of narrow-gauge tramways or local railways in Belgium, which covered the whole country, including the countryside, and had a greater route length than the mainline railway system. They were 1,000 mm metre gauge and included electrified city lines and rural lines using steam locomotives and diesel railcars; half the system was electrified.

The Brussels tramway network is a tram system serving a large part of the Brussels-Capital Region of Belgium. It is the 16th largest tram system in the world by route length, in 2017 providing 149.1 million journeys over routes 140.6 km (87.4 mi) in length. In 2018, it consisted of 18 tram lines. Brussels trams are operated by STIB/MIVB, the local public transport company.