Birjia is one of the lesser known primitive tribes of the Chota Nagpur plateau of Bihar
. They are mostly found in Lohardaga, Bishunpur and Raidih police stations of Palamu District. The traditional occupation of Birjias was iron smelting, benora cultivation and basket making. They are believed to have primarily discovered the iron ore and moulded iron implements with the help of an indigenous process. The Birjias have resorted to new economic activities for living because of the shortage of raw materials for their traditional occupation.