東海

東海 or 东海 means "East Sea" or "Eastern Sea" in Chinese characters.

In Chinese, it may refer to:
 * East China Sea, a marginal sea east of China
 * East Sea (Chinese literature), one of the Four Seas, a literary name for the boundaries of China
 * Tunghai University, a university in Taiwan

In Japanese, it may refer to:
 * Tōkai region, a subregion of Chūbu facing the Pacific Ocean
 * Tōkai, Ibaraki, a village in Ibaraki, Japan
 * Tōkai, Aichi, a city in Aichi, Japan
 * Tōkai University, a university in Tokyo, Japan
 * Tōkai Gakki, a Japanese guitar manufacturer
 * Tōkai (train), a train service
 * Central Japan Railway Company, a railway operator

In Korean hanja, it may refer to:
 * Sea of Japan, a marginal sea of the western Pacific Ocean, bordered by Japan, Korea and Russia
 * Donghae, Gangwon, a city in Gangwon, South Korea
 * Donghae (singer), a member of the Korean music group Super Junior