The Doon School is a selective all-boys private boarding school in Dehradun, Uttarakhand, India, which was established in 1935. It was envisioned by Satish Ranjan Das, a lawyer from Calcutta, as a school modelled on the British public school while remaining conscious of Indian ambitions and desires. The school admitted its first pupils on 10 September 1935, and formally opened on 27 October 1935, with Lord Willingdon presiding over the ceremony. The school's first headmaster was Arthur E. Foot, an English educationalist who had spent nine years as a science master at Eton College, England.

Dehradun, also known as Dehra Doon, is the capital and the most populous city of the Indian state of Uttarakhand. It is the administrative headquarters of the eponymous district and is governed by the Dehradun Municipal Corporation, with the Uttarakhand Legislative Assembly holding its winter sessions in the city as its winter capital. Part of the Garhwal region, and housing the headquarters of its Divisional Commissioner, Dehradun is one of the "Counter Magnets" of the National Capital Region (NCR) being developed as an alternative center of growth to help ease the migration and population explosion in the Delhi metropolitan area and to establish a smart city in the Himalayas. It is the third largest city in the Himalayas after Kathmandu and Srinagar.