Dou Can or Dou Shen (Chinese: 竇參; 734–793), courtesy name Shizhong (時中), was an official of the Chinese Tang dynasty, serving as a chancellor during the reign of Emperor Dezong. He was known for being a capable judge before becoming chancellor, but was considered a partisan power monger as a chancellor, eventually drawing Emperor Dezong's ire and leading to his demotion and later forced suicide.
Dou Shen was born in 734, during the reign of Emperor Xuanzong. His ancestors were originally Xianbei nobles of Northern Wei with the clan name Gedouling (紇豆陵), and further claimed that they were descended from the Han dynasty official Dou Wu and fled to Xianbei realms after Dou Wu was killed in 168 after a failed struggle with powerful eunuchs. Dou Shen's Northern Wei ancestors, after assuming the surname of Dou during the change of Xianbei names to Han names regime that Emperor Xiaowu of Northern Wei instituted, were ancestors in the line to officials of Western Wei and Sui dynasty, before the early Tang dynasty chancellor Dou Kang, who was Dou Shen's great-great-great-grandfather. Dou Shen's grandfather Dou Jin (竇瑾) was not recorded with any official titles, but Dou Shen's father Dou Shenyan (竇審言) served as a county magistrate.
Dou Shen learned about laws and administrative regulations when he was young. It was said that he had a stern and decisive personality. Because of his heritage, he became an official in his young age, and eventually became the sheriff of Wannian County (萬年), one of the two counties making up the Tang capital Chang'an. On one night, one of his colleagues was supposed to be on duty in watching the prisoners but asked Dou to fill in for him because his relative was ill. Dou agreed. That night, some prisoners escaped, and his superior, the mayor of Jingzhao Municipality (京兆, i.e., the Chang'an region) read the rotation schedule and saw that Dou's colleague was to be on duty. He was set to punish Dou's colleague, when Dou stated that it was he who watched the prisoners and should be held responsible. As a result, he was sent out of the capital to be the magistrate of Jiangxia County (江夏, in modern Wuhan, Hubei), but received praise for his honesty.