Last name Bui (Bui 
, Bùi 
, 裴 
, along with others...) , around the globe, is a widespread surname. The cognomen Bui is habitual in Vietnam, where it is a common surname, Macao, and British Virgin Islands, where it is quite a common surname (explore the name in all countries). In absolute terms, it is the most numerous in China, Vietnam, and the United States. Very seldom, Bui is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bui | Australia, Vietnam, United States, India, Malaysia |
| Bùi | Australia, Vietnam, United States, Indonesia, Malaysia |
| 裴 | China |
| بوي | Morocco, Egypt, Libya, Sudan, Saudi Arabia |
| ブイ | Japan |
| Буи | Russia, Ukraine |
| bui huy bich (b. 1744) |
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| bui duong lich (b. 1757) |
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| bui vien Vietnamese reformer and diplomat (b. 1839) |
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bui van thinh South Vietnamese diplomat, FR (b. 1915) |
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alain bui French academic, president of Versailles Saint-Quentin-en-Yvelines University, FR (b. 1969) |
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gwenegan bui French politician, FR (b. 1974) |
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mung bui Vietnamese Esperantist, VN |
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jenny bui cambodian-born American nail artist |
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| idrio bui Italian racing cyclist, IT (b. 1932) |
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thanh bui Vietnam’s top singer, song writer and producer., AU (b. 1983) |
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kim bui Olympic gymnast, DE (b. 1989) |
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| gianni bui Italian footballer, IT (b. 1940) |
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bui baravilala American-football player (1991-), US (b. 1991) |
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| lucienne bui trong FR (b. 1942) |
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| barbara bui French fashion designer, FR (b. 1956) |
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