The Xiang River is the chief river of the Lake Dongting drainage system of the middle Yangtze, the largest river in Hunan Province, China. It is the second-largest tributary in terms of surface runoff, the fifth-largest tributary by drainage area of the Yangtze tributaries. The river flows generally northeast through the provinces of Guangxi and Hunan, its tributaries reaching into Jiangxi and Guangdong.