Ambala is a city and a municipal corporation in Ambala district in the state of Haryana, India, located on the border with the Indian state of Punjab and in proximity to both states capital Chandigarh. Politically, Ambala has two sub-areas: Ambala Cantonment and Ambala City, eight kilometres apart, therefore, it is also known as "Twin City." It has a large Indian Army and Indian Air Force presence within its cantonment area. It is located 200 km (124 mi) to the north of New Delhi, India's capital, and has been identified as a counter-magnet city for the National Capital Region to develop as an alternative center of growth to Delhi.

Ambala district is one of the 22 districts of Haryana state in the country of India with Ambala town serving as the administrative headquarters of the district. District Ambala lies on the North-Eastern edge of Haryana and borders Punjab and Himachal Pradesh. Ambala district is a part of Ambala Division.