Lintong District is a district in Xi'an, Shaanxi Province of China. The Terracotta Army and the Mausoleum of the First Qin Emperor was discovered in March 1974 near this district.
The National Time Service Center, the Chinese Academy of Sciences (中国科学院国家授时中心), formerly known as Shaanxi Astronomical Observatory (陕西天文台), was established in 1966 in Lintong responsible for the time standard in mainland China. It was renamed to its present name in 2001.
The name of the district comes from two rivers. Lin river is on the east side and Tong river is on the west side of the district.
Lintong is headquarters of the 47th Group Army of the People's Liberation Army, one of the two group armies that comprise the Lanzhou Military Region responsible for defending China's northwest borders.