Haikou is the capital of Hainan Province, China.
Haikou may also refer to: Haikou, Fuqing, town in Fuqing County, Fuzhou City, Fujian, China Haikou Subdistrict (formerly, Haikou Town), in Xishan District, Kunming, Yunnan, China Several other towns named Haikou; see :zh:海口镇
Various objects near Haikou, Hainan Haikou Bay Haikou Meilan International Airport Haikou Xiuying Port Haikou New Port
Ships Chinese destroyer Haikou (171)
See also Haiku (disambiguation)