Northeast China

Northeast China, historically known in English as Manchuria, is a geographical region of China, consisting of the three provinces of Liaoning, Jilin and Heilongjiang. The region is sometimes called the Three Northeast Provinces (东北三省/東北三省; Dōngběi sānshěng). It is separated from Russia largely by the Amur, Argun, and Ussuri rivers, from North Korea by the Yalu River and Tumen River, and from the Inner Mongolian Autonomous Region by the Greater Khingan Range. The heartland of the region is the Northeast China Plain.

In the context of the Northeast China Revitalization strategy of the State Council, five eastern prefectures of Inner Mongolia are also defined as part of the Northeast: Xilin Gol, Chifeng, Tongliao, Hinggan and Hulunbuir. The region is nearly congruent with some definitions of "Manchuria" in historical foreign usage.

Another term for the area is Guandong (关东/關東; Guāndōng) meaning "east of the gate," referring to the gate at Shanhaiguan. This name was also used by the Japanese to their leased territory of Dalian, as Kwantung Chou, and its Kwantung Army which was later mobilized to set up the puppet state of Manchukuo in Northeast China.