Hari Singh Nalwa (29 April 1791 – 30 April 1837) was Commander-in-chief of the Sikh Khalsa Fauj, the army of the Sikh Empire. He is known for his role in the conquests of Kasur, Sialkot, Attock, Multan, Kashmir, Peshawar and Jamrud. Hari Singh Nalwa was responsible for expanding the frontier of Sikh Empire to beyond the Indus River right up to the mouth of the Khyber Pass. At the time of his death, the western boundary of the empire was Jamrud.

He served as governor of Kashmir, Peshawar and Hazara. He established a mint on behalf of the Sikh Empire to facilitate revenue collection in Kashmir and Peshawar.