Jongsong Peak is a mountain in the Janak section of the Himalayas.

[3] The first ascent was made on 2 June 1930 by Hermann Hoerlin [de] and Erwin Schneider [de], members of an international expedition which included climbers from Germany, Austria, Switzerland and the UK and was led by Gunther Dyhrenfurth.

[4][5][6] Until the first ascent of Kamet on 21 June 1931 by Frank Smythe (who was also a member of this 1930 expedition), Jongsong was the highest climbed peak in the world.

On 30 September 2012, a team from the Kolkata section of the Himalayan Club (Pradeep Sahoo (Leader) with Ang Dorji Sherpa and Phurba Sherpa), ascended the Jongsong peak's east summit (named Domo by Dyhrenfurth) on a new route via the eastern ridge of the Jongsong peak from a col between the Jongsong massif and an adjoining peak called Dome Kang.

The previous day, another team from the same expedition scaled Dome Kang (Rajib Mondal and Dawa Sherpa) from the common col along its east face (New route first ascent / second ascent overall).