Liu Qian (劉謙)[1][2] or Liu Zhiqian (劉知謙)[3][4] (d. 894), posthumously honored by Southern Han as Emperor Shengwu (聖武皇帝, "holy and martial") with the temple name of Daizu (代祖), was an army officer of the Chinese Tang dynasty's Qinghai Circuit (清海, headquartered in modern Guangzhou, Guangdong). Liu Qian, due to his accomplishments, came to hold Lingnan East's Feng Prefecture (封州, in modern Zhaoqing, Guangdong) as its prefect, and build up his army strength there, eventually, after his death, allowing his son Liu Yin to take over all of Qinghai Circuit and then for Liu Yin's younger brother Liu Yan to establish a new state of Southern Han.