The Qinghai–Tibet railway or Qingzang railway (Standard Tibetan: མཚོ་བོད་ལྕགས་ལམ།, mtsho bod lcags lam; simplified Chinese: 青藏铁路; traditional Chinese: 青藏鐵路; pinyin: Qīngzàng Tiělù), is a high-elevation railway that connects Xining, Qinghai Province, to Lhasa, Tibet Autonomous Region of China.

The length of the railway is 1,956 km (1,215 mi). Construction of the 815 km (506 mi) section between Xining and Golmud was completed by 1984. The 1,142 km (710 mi) section between Golmud and Lhasa was inaugurated on 1 July 2006, by General Secretary of the Chinese Communist Party Hu Jintao: the first two passenger trains were "Qing 1" (Q1) from Golmud to Lhasa, and "Zang 2" (J2) from Lhasa to Beijing. This railway is the first that connects the Tibet Autonomous Region to any other provinces. Tibet, due to its elevation and terrain, is the last provincial level region in China to have a railway. Testing of the line and equipment started on 1 May 2006. Passenger trains run from Beijing, Chengdu, Chongqing, Guangzhou, Shanghai, Xining, and Lanzhou and can carry between 800 and 1,000 passengers during peak season.The line includes the Tanggula Pass, which, at 5,072 m (16,640 ft) above sea level, is the world's highest point on a railway. Tanggula railway station at 5,068 m (16,627 ft) 33°00′18.50″N 91°38′57.70″E is the world's highest railway station. The 1,338 m (4,390 ft) Fenghuoshan tunnel is the highest rail tunnel in the world at 4,905 m (16,093 ft) above sea level. The 4,010 m (13,160 ft) New Guanjiao Tunnel is the longest tunnel between Xining and Golmud, and the 3,345 m (10,974 ft) Yangbajing tunnel is the longest tunnel between Golmud and Lhasa. More than 960 km (600 mi), over 80% of the Golmud–Lhasa section, is at an elevation of more than 4,000 m (13,123 ft). There are 675 bridges, totalling 159.88 km (99.34 mi); about 550 km (340 mi) of track is laid on permafrost.