KONGSBERG, a mining-town of Norway, stift of Aggerhuus, on the Louven-Elf, 43 miles W.S.W. of Christiania. It is the seat of a mining directory, and has a mining school, a royal manufactory of firearms, and government powder-mills. The silver mines in the vicinity, discovered in 1623, are the most important in the kingdom. Pop. about 4000.