Nun, mountain summit in Ladakh, India

Nun is a 7,135-metre mountain in the Nun-Kun massif of the Kishtwar Himalaya, in the Indian union territory of Ladakh. It is the highest peak of the massif, which it forms with Kun and Lingsarmo (formerly Pinnacle Peak). The easiest ascent follows the western ridge.

After failed attempts in 1934 and 1937, Nun was first climbed in 1953 by a French-Swiss-Indian Sherpa team led by Bernard Pierre and Pierre Vittoz, via the west ridge. Vittoz and climber Claude Kogan reached the summit. In 1977 a Czech expedition of seven climbers made the first ascent of the northwest face.

The mountain expedition connects travelers with local communities in Tangol village, where residents support climbing activities through various support services.

The easiest ascent follows the western ridge, the route used by the 1953 first ascent team led by Bernard Pierre and Pierre Vittoz. Approach is long: expeditions travel from New Delhi via Leh and Kargil to the base near Tangol in the Suru Valley. Climbers need prior experience at high altitude and solid fitness before setting out.

The Nun-Kun massif takes its name from its two highest summits, Nun (7,135 m) and Kun; the Lingsarmo, formerly called Pinnacle Peak, completes the group in the Kishtwar Himalaya. The Nun is the highest point of this massif and ranks 120th among the world's peaks by topographic prominence above 500 m.