The Huma River is a right tributary on the northern loop of the Amur River in China's province of Heilongjiang. It starts in the Greater Khingan Mountains and flows in a general eastern and south-eastern direction, parallel and southwest of the Amur, until falling into the Amur in Huma County, at 51°37′01″N 126°41′49″E / 51.617°N 126.697°E / 51.617; 126.697, about 10 km south of Huma County's county seat.[1] Somewhere near its mouth was the Russian fort of Kumarsk at the time of the Russian–Manchu border conflicts. At the time it was also called "Kamora River" or "Houmar River".