Leh district is a district in Indian-administered Ladakh in the disputed Kashmir-region. Ladakh is an Indian-administered union territory. With an area of 45,110 km2, it is the second largest district in the country, second only to Kutch. It is bounded on the north by Gilgit-Baltistan's Kharmang and Ghanche districts and Xinjiang's Kashgar Prefecture and Hotan Prefecture, to which it connects via the historic Karakoram Pass. Aksai Chin and Tibet are to the east, Kargil district to the west, and Lahul and Spiti to the south. The district headquarters is in Leh. It lies between 32 and 36 degree north latitude and 75 to 80 degree east longitude.

Ladakh is a region administered by India as a union territory and constitutes an eastern portion of the larger Kashmir region that has been the subject of a dispute between India and Pakistan since 1947 and India and China since 1959. Ladakh is bordered by the Tibet Autonomous Region to the east, the Indian state of Himachal Pradesh to the south, both the Indian-administered union territory of Jammu and Kashmir and the Pakistan-administered Gilgit-Baltistan to the west, and the southwest corner of Xinjiang across the Karakoram Pass in the far north. It extends from the Siachen Glacier in the Karakoram range to the north to the main Great Himalayas to the south. The eastern end, consisting of the uninhabited Aksai Chin plains, is claimed by the Indian Government as part of Ladakh, but has been under Chinese control.