西海
Xīhǎi
- (archaic) the Mediterranean Sea
- (～市) Saikai (a city in Nagasaki Prefecture, Japan)
- (～郡) a former commandery in the ancient Liang Province (涼州／凉州 (Liángzhōu)), located in the modern Haibei Tibetan Autonomous Prefecture of Qinghai, China
- Saikai (a city in Nagasaki Prefecture, Japan)
- a former commandery in the ancient Liang Province (涼州／凉州 (Liángzhōu)), located in the modern Haibei Tibetan Autonomous Prefecture of Qinghai, China
- a lake in the Shichahai area of Beijing, China
- the Mediterranean Sea