西海, meaning "west sea", may refer to:

Look up 西海 in Wiktionary, the free dictionary.

In the Chinese reading Xīhǎi:

• Xihai Jun, a prefecture of ancient China
• Qinghai Lake, one of the Four Seas of China

In the Korean reading Seohae, alternatively spelled Sŏhae:

• Sohae University (서해대학교/西海大學校) in Gunsan, South Korea
• Former name of Hwanghae, one of the Eight Provinces of Korea during the Joseon Dynasty
• The Yellow Sea, sometimes also called the West Sea of Korea

In the Japanese readings Saikai or Nishiumi:

• Saikaidō, a region of ancient Japan
• Saikai, Nagasaki (西海市), city in Nagasaki Prefecture
• Nishiumi, Ehime (西海町), former village in Ehime Prefecture

This disambiguation page lists articles associated with the same title when written in Chinese characters.
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