West Sea

West Sea or Western Sea may refer to:


 * Atlantic Ocean
 * Pacific Ocean
 * Indian Ocean
 * Mediterranean Sea
 * Yellow Sea, as used in Korea
 * Baltic Sea, the English translation of the Estonian name for the sea
 * North Sea, the English translation of an alternative Danish name for the sea
 * Qinghai Lake, the English translation of an alternative Chinese name for the lake and one of the Four Seas
 * Sea of the West, mythical sea in North America
 * Xihai (disambiguation) (西海), translated into English as West Sea
 * West Sea Barrage, Nampho, North Korea