NSB Di 2 was a class of 54 diesel-hydraulic locomotives operated by the Norwegian State Railways (NSB). Six units were built by Maschinenbau Kiel (MaK) of Kiel, Germany, and the remaining by Thune in Oslo. The locomotives were used for shunting and for local and light freight trains throughout NSBs network. Based on MaK's 575C design, the locomotives were 10.0 meters (32 ft 10 in) long and had a C wheel arrangement.The first six units were built by MaK and were delivered between 1954 and 1957.