Amur Oblast is a federal subject of Russia, located on the banks of the Amur and Zeya rivers in the Russian Far East. Amur Oblast borders Heilongjiang province of the People's Republic of China (PRC) to the south.

The Amur River or Heilong River is a perennial river in Northeast Asia, forming the natural border between the Russian Far East and Northeast China. The Amur proper is 2,824 km (1,755 mi) long, and has a drainage basin of 1,855,000 km2 (716,000 sq mi). If including its main stem tributary, the Argun, the Amur is 4,444 km (2,761 mi) long, making it the world's tenth longest river.