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.

Chandimandir Cantonment is a military cantonment of the Indian Army located in Panchkula district at the foot of the Sivalik Hills adjoining Panchkula city in Haryana. It is the headquarters of the Western Command of the Indian Army.