Sanjiang () means Three Rivers in Chinese and might refer to: Historically, the collective name for the four provinces of Jiangsu, Zhejiang and Jiangxi. Jiangsu and Anhui were originally part of the Jiangnan Province, hence the name "Sanjiang" (Three Rivers) together with Zhejiang and Jiangxi. The Wu-speaking region of Zhejiang and southern Jiangsu. People from the region were referred to as "Shanghai people" or "Sanjiang people". The Three Parallel Rivers of southwestern China: the Jinsha (upper Yangtze), the Lancang (Mekong), and the Nu (Salween).
It may also refer to: Sanjiang Dong Autonomous County, Guangxi Sanjiang College, Nanjing Sanjiang Plain, in eastern Heilongjiang north of the Changbai Mountains and east of the Lesser Khingan
Subdistricts Sanjiang Subdistrict, Chongqing, in Qijiang District Sanjiang Subdistrict, Guiyang, in Xiaohe District, Guiyang, Guizhou Sanjiang Subdistrict, Jinhua, in Wucheng District, Jinhua, Zhejiang Sanjiang Subdistrict, Shengzhou, Zhejiang Sanjiang Subdistrict, Yongjia County, Zhejiang
Towns Sanjiang, Daozhen County (Daozhen Gelao and Miao Autonomous County), Guizhou Sanjiang, Qiandongnan, in Jinping County, Guizhou Sanjiang, Jiangmen, Guangdong Sanjiang, Liannan County (Liannan Yao Autonomous County), Guangdong Sanjiang, Hainan, in Meilan District, Haikou Sanjiang, Miluo (三江镇), a town in Miluo City, Hunan province Sanjiang, Xupu (三江镇), a town of Xupu County, Hunan Sanjiang, Nanchang County, Jiangxi Sanjiang, Bazhong, in Bazhou District, Bazhong, Sichuan Sanjiang, Chongzhou, Sichuan Sanjiang, Jingyan County, Sichuan Sanjiang, Wangcang County, Sichuan
Townships Sanjiang Township, Gongcheng County (Gongcheng Yao Autonomous County), Guangxi Sanjiang Township, Jinxiu County (Jinxiu Yao Autonomous County), Guangxi Sanjiang Township, Jiangxi, in Nankang, Jiangxi Sanjiang Township, Sichuan, in Wenchuan County Sanjiang Sui Ethnic Township, Rongjiang County, Guizhou
Other Sanjiang Church, church in Wenzhou, China