北海

北海, meaning "North Sea" in Chinese and Japanese, may refer to:


 * Hokkaido (北海道), one of the main islands of Japan.
 * Beihai Park (北海公园/北海公園), a well-known park in Beijing
 * Beihai City (北海市), a prefecture-level city in Guangxi lying on the Gulf of Tonkin
 * Lake Baikal (北海), a Siberian lake north of Outer Mongolia
 * North Sea (北海((大西洋))), a marginal sea of the Atlantic Ocean located between Great Britain, Scandinavia, Germany, the Netherlands, Belgium, and France
 * County, North sea (北海郡)，an administrative division during the Western Han period.