The NSB class 30 was a 4-6-0 tender steam locomotive formerly used in Norway by Norges Statsbaner. The class 30 engines were an upsized version of the NSB Class 45 engines. Class 30 locomotives were originally intended for use on Dovrebanen, but they were employed throughout the Norwegian rail network. The first of these engines were produced in 1914, the last in 1939.A total of 45 type 30 engines were completed by Thune which produced 22 engines, and NMI which produced 23 engines.