- 海西州 hǎixīzhōu Haixi Mongol and Tibetan Autonomous PrefectureHaixi Mongol and Tibetan Autonomous Prefecture, located in [[青海省|青海省|qing1 hai3 sheng3]] province
- 海西蒙古族藏族自治州 hǎixīměnggǔzúzàngzúzìzhìzhōu Haixi PrefectureHaixi Mongol and Tibetan Autonomous Prefecture, an area in Qinghai Province [[青海省|青海省|qing1 hai3 sheng3]]
- 海西经济区 hǎixījīngjìqū Economic Zone West of the StraitsHaixi Economic Zone, a development area focused on Fujian Province and neighboring regions to promote economic cooperation across the Taiwan Strait
