Ulugh Muztagh or Ulugh Muztag (Uighur: Ulug muz tag) (simplified Chinese: 乌鲁木孜塔格; traditional Chinese: 烏魯木孜塔格; pinyin: Wūlǔ Mùzītǎgé) and Muztag Feng (Chinese: 木孜塔格峰; pinyin: Mùzītǎgé Fēng), is an extremely remote mountain group on the northern Qinghai-Tibetan Plateau.

Expeditions who have climbed the mountain spent 2 to 3 weeks on the approach alone using 4 or 6 wheel drive vehicles.

The 7,723 metre elevation claim was made by the English country gentleman and explorer St George Littledale in 1895.

Despite the fact that earlier explorers had put forward elevations several hundred metres lower, and the scientific 6,973 metre measurement made in 1985, the Littledale elevation has been so resilient that even into the 21st century it still remains the most widely quoted; it is found in generally reliable publications, including the Times Atlas and fact books.

Other remote Tibetan-related mountains whose elevations have been established by SRTM and modern Chinese mapping include: Northeast of Ulugh Muztagh an endorheic basin with several important lakes (Aqqikol, Ayakkum, Jingyu, etc.)