also Hei·long or Hei·long·jiang
- The world's ninth longest river, forming the border between the Russian Far East and Northeastern China, emptying into the Pacific Ocean through the Strait of Tartary, where the mouth of the river faces the northern end of the island of Sakhalin.
- Amur Region or Amurskaya Oblast - a federal subject of Russia, its administrative centre is Blagoveshchensk.
From Russian Амур (Amur) of unknown origin, but most likely meaning "black river" or "black dragon," judging from Manchu sahaliyan ula "black river," Mongolian Хара-Мурэн (Khara-Muren) "black river," and Chinese 黑龍江 (heilong jiang) "black dragon river," hence the likely calques. The second syllable mur may be cognate with Mongolian muren "river," Korean 물 (mur or mul) "water, river," obsolete Korean 미르 (mireu) "dragon," etc.