Kou is a Chinese family name. Notable people with the name include:
Kou Lei (born 1987), Ukrainian table tennis player of Chinese origin
Kou Nai-han (born 1982), Taiwanese volleyball player
Kou Qianzhi (365–448), Taoist reformer
Kou Tie (born 1950), Chinese major general
Kou Yingjie (1880?-?), Chinese military leader
Kou Zhun (961–1023), chancellor during Emperor Zhenzong's reign
Kou Zhichao (born 1989), Chinese volleyball player