GB Class 1 was a series of four trams and two trailers built by Hannoversche Waggonfabrik for Graakalbanen of Trondheim, Norway.

Each of the four Siemens motors had an effect of 50 kW (67 hp).

Despite running in part in city streets, the trams were 2.6 m (8 ft 6 in) wide.

3 is preserved as a heritage tram at Trondheim Tramway Museum.

This Norwegian tram- or light rail-related article is a stub.