Kalka is a town in the Panchkula district of Haryana, India. It is near Panchkula city. The name of the town is derived from the Hindu goddess Kali. It is situated in the foothills of the Himalayas and is a gateway to the neighbouring state of Himachal Pradesh. It is on the National Highway 5 between Chandigarh and Shimla, and it is the terminus of the Kalka-Shimla Railway. To the south of Kalka is Pinjore, and the industrial village of Parwanoo is to the north on NH 22. Railways and Industrial development have led to a continuous urban belt from Pinjore to Parwanoo, but Kalka gained major economic benefits due to only highway until 2010, Shimla. It is the tehsil of 253 nearby sub-villages. Nearby is Chandimandir Cantonment, where the Western Command of the Indian army is based. In 2013, the municipal committee of Kalka was dissolved and the administration was reassigned to Panchkula Municipal Corporation.

Panchkula district was formed as the 17th district of the Indian state of Haryana on 15 August 1995. It comprises two sub divisions and two tehsils: Panchkula and Kalka. It has 264 villages, out of which 12 are uninhabited and ten wholly merged with towns or treated as census towns according to the 1991 census. There are five towns in the district: Barwala, Kalka, Panchkula, Pinjore and Raipur Rani. The total population of the district is 319,398 out of which 173,557 are males and 145,841 are females.