Dead Sea, a salt lake east of Israel, as used in the Bible (Joel 2:20; Ezek. 47:18).

South China Sea, a marginal sea south of China and east and south of Indochina, called Biển Đông in Vietnamese, meaning "Eastern Sea".

East China Sea, a marginal sea east of China, where it is called Dōng Hǎi (东海/東海).

Mare Orientale, Latin for "Eastern Sea", on the Moon.

East Sea Fleet

East Sea Bridge

East Sea (Chinese mythology), a sea in Chinese mythology

Sea of Japan, a marginal sea between Japan, Russia and Korea, called 동해 in Korea. See also Sea of Japan naming dispute.

Baltic Sea, called "East Sea" in various languages: see Baltic Sea#Name in other languages