In all the world, Xu (Xu 
, 徐 , شو 
, along with others...) is a common gender-neutral given name. The given name Xu is characteristic of Macao, where it is quite a common epicene name, Singapore, where it is quite a rare gender-neutral name, and Hong Kong. Measured by absolute frequency, it is commonest in China, Egypt, and Indonesia. Much more frequently, Xu is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Xu | China, Indonesia, Australia, Hong Kong, United States |
| 徐, 許 | China |
| شو | Saudi Arabia, Sudan, Algeria, Egypt, Iraq |
| シュー | Japan |
| Сюй | Azerbaijan, Kazakhstan, Russia, Kyrgyzstan, Ukraine |
| שו | Israel |
Xu is also a name for the fictitious and mythical characters: Bao Xu , the Water Margin character; Xu Xian , the character in the Legend of the White Snake; Xu Qing , the fictional Song dynasty knight-errant, The Seven Heroes and Five Gallants; Xu , the fictional character appearing in the movie « La fleur du poirier s'ouvre en silence », A Touch of Spring and Siw , the fictional character in Sune universe.
| feng xu eunuch who served Emperor Ling of Han (b. 150) |
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| gan xu 0171-0218 (b. 171) |
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| xun xu Chinese official serving Emperor Wu of Jin (during the late Three Kingdoms period), musician, writer and painter (c.221–289) (b. 201) |
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| xu de Tang dynasty person CBDB = 139137 (b. 594) |
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| xu fang Tang dynasty person CBDB=145573 (b. 766) |
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| qi xu (b. 950) |
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| xu feng Song dynasty person CBDB = 45115 (b. 1177) |
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| xu sen Song dynasty person CBDB = 46329 (b. 1190) |
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| xu yun Ming dynasty person CBDB = 107631 (b. 1297) |
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| xu xiang Ming dynasty person CBDB = 66651 (b. 1332) |
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| xu xu Ming dynasty person CBDB = 129901 (b. 1355) |
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| xu zhong Ming dynasty person CBDB = 66650 (b. 1362) |
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| xu gui Ming dynasty person CBDB = 67415 (b. 1407) |
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| xu zheng Ming dynasty person CBDB = 129891 (b. 1417) |
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| xu gui politician (b. 1425) |
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