Sonipat (Hindi: सोनीपत), also spelled as Sonepat, is an ancient town and a municipal council in the Sonipat district in the state of Haryana, India. It comes under the National Capital Region and is around 20 km from Delhi's Border. The Yamuna River runs along the eastern boundary of the district. Sonipat comprises 3 sub-divisions namely Sonipat, Ganaur and Gohana and seven blocks (Sonipat, Ganaur, Rai, Kharkhoda, Gohana, Kathura and Mundlana). It has been carved out of Rohtak and made a full fledged district on 22 December 1972.

Its believed that Sonipat was founded as Swarnaprastha by the five Pandava brothers during the times of Mahabharata. Its one of the five Preasthas or towns demanded by Yudhisthira from Duryodhana as the price of peace. Another legend ascribed it to Raja Soni, the thirteenth descendent of Arjuna, one of the Pandava brothers. Both the traditions are without substance. There is no mention of Sonipat in the Mahabharata, although it has been noted much earlier by the great grammarian Panini in his celebrated Ashtadhyayi. The town was therefore already in existence around 600 B.C.