Kaji Biraj Thapa Magar (died 1721) played an important role in the Gorkha Kingdom. His leadership, prudence and courage all exhibit he was one of the important Gorkha Bhardars (गोरखाली भारदार) that helped Narbaupal Shah become King of Gorkha. He may also be seen as a 'King Maker' in the modern day term. According to different genealogies, he had taken Narabhupal Shah and his mother Malikavati in custody for three months. The Queen Mother and her son were secretly protected at his residence. After the death of his grandfather, Narabhupal Shah became the King of Gorkha in 1716 and died in 1743. His son, King Prithvi Narayan Shah, succeeding him began unification of small principalities to found modern Nepal.