Bal Narsingh Kunwar or Balanarsingh Kanwar (Nepali: बालनरसिंह कुँवर; 2 February 1783 - 24 December 1841) posthumously referred as Bal Narsingh Kunwar Rana was a Kaji, military officer and governor in the Kingdom of Nepal.

He was born on 2 February 1783 to Governor of Jumla, Kaji Ranajit Kunwar, the only son of Sardar Ram Krishna Kunwar, a prominent general of King Prithvi Narayan Shah.

[citation needed] He travelled to Banaras with his ally Bhimsen Thapa, Dalbhanjan Pande, Ranganath Poudyal, Chautariya Balbhadra Shah, when King Rana Bahadur Shah as Swami Maharaja set out to leave the country.

[3] On the night of 25 April 1806, King Rana Bahadur Shah held a courtier meeting at Kazi Tribhuvan Khawas's house during which he taunted and threatened to execute his half brother Chautariya Sher Bahadur.

[4][5] Bal Narsingh cut down the murderer Sher Bahadur when the latter drew a sword in desperation at around 10 pm and killed the King.