Raja Nahar Singh (1823–1858) was a king of the princely state of Ballabhgarh in Faridabad District of Haryana, India. His forefathers were Jats from Tewatia gotra who had built a fort in Faridabad around 1739. He was involved in the Indian Rebellion of 1857. The small kingdom of Ballabhgarh is only 20 miles from Delhi. The name of the Jat Raja Nahar Singh will always be highly regarded among those who martyred themselves in the 1857 war of independence.His palace is taken over by the government of Haryana under Haryana Tourism. It was confiscated by Britishers and no one after and before. Nahar Singh Stadium in Faridabad is named after him.