Class 15 is a type of electric locomotives operated by SNCB/NMBS. The locomotives were originally used for cross-border services into France and the Netherlands, and like the class 16 they have become surplus after the introduction of Thalys and Class 11s. They now[when?] earn their keep on a few Commuter "P" trains in the Liège area.
Before the January 1, 1971, renumbering, they were known in the six-number scheme as Type 150.