Hari Singh Nalwa (Nalua) (1791–1837) was Commander-in-chief of the Sikh Khalsa Army, the army of the Sikh Empire. He is known for his role in the conquests of Kasur, Sialkot, Attock, Multan, Kashmir, Peshawar and Jamrud. He is also the founder of Haripur city in Pakistan, which is named after him.
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. In 1831, he opposed moves by Ranjit Singh to appoint Kharak Singh as his successor as Maharaja of the Sikh Empire. 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.