Cognomen Xiyun (Xiyun 
, 细云 , 喜运 ) , around the globe, is a rare surname. The surname Xiyun is habitual in Finland, where it is a very rare surname, China, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in China, Finland, and the United States. Much more prevalently, Xiyun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Xiyun | Taiwan, China, United States, Finland, Australia |
| 细云, 喜运 | China |
| Сиюнь | Ukraine |
Хиюн, 习云, 习匀, 习芸, 习赟, 习运, 习鋆, 兮云, 兮韻, 吸允, 唏云, 唏昀, 喜云, 喜允, 喜纭, 喜耘, 喜芸, 喜蕴, 喜贇, 喜赟, 喜雲, 喜霣, 囍雲, 夕云, 夕耘, 夕芸, 夕蕴, 夕雲, 夕韵, 奚云, 奚芸, 嬉芸, 希云, 希允, 希匀, 希昀, 希耘, 希芸, 希蕴, 希赟, 希运, 希鋆, 希雲, 希韫, 希韵, 席云, 息云, 惜云, 惜昀, 惜芸, 惜蕴, 惜韵, 戏云, 昔云, 晞云, 晞昀, 晞雲, 晰云, 晰匀, 晰昀, 晰韵, 曦云, 曦允, 曦匀, 曦昀, 曦耘, 曦芸, 曦蕴, 曦赟, 曦鋆, 曦韵, 曦韻, 析耘, 析蕴, 樨云, 檄云, 汐云, 汐昀, 汐芸, 汐韵, 洗云, 浠昀, 浠沄, 浠韵, 淅云, 淅匀, 溪云, 溪昀, 溪晕, 溪沄, 溪耘, 溪芸, 溪运, 溪陨, 溪韵, 溪韻, 熙云, 熙允, 熙匀, 熙恽, 熙昀, 熙沄, 熙耘, 熙芸, 熙赟, 熙运, 熙韵, 熹允, 熹昀, 熹芸, 犀蕴, 玺云, 玺匀, 玺芸, 玺贇, 玺赟, 玺运, 玺鋆, 玺陨, 皙昀, 禧赟, 稀云, 系云, 系允, 细允, 细芸, 细运, 翕昀, 翕赟, 袭贇, 袭韵, 西云, 西允, 西昀, 西芸, 西蕴, 西赟, 西运, 西鋆, 西韫, 西韵, 铣韵, 锡云, 锡允, 锡恽, 锡昀, 锡晕, 锡沄, 锡耘, 锡芸, 锡蕴, 锡贇, 锡赟, 锡运, 锡鋆, and 锡韵