Zhoukou (Chinese: 周口; pinyin: Zhōukǒu; Postal map spelling: Chowkow) is a prefecture-level city in eastern Henan province, People's Republic of China. It borders Zhumadian to the southeast, Xuchang and Luohe to the west, Kaifeng to the northwest, Shangqiu to the northeast, and the province of Anhui on all other sides.