Last name Jau (Jo 
, Jau 
, โจ 
) , across the world, is a widespread cognomen. The surname Jau is habitual in Guinea-Bissau, where it is quite a common surname, Brunei, and Macao (explore the name in all countries). Not in comparison with a country's population, the name is most common in Indonesia, Egypt, and Myanmar. More frequently, Jau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jo | Australia, Egypt, Indonesia, United States, Myanmar |
| Jau | Australia, Indonesia, United States, Myanmar, United Kingdom |
| โจ | Thailand |
| Jaur | Malaysia, France, Indonesia, India, United States |
| jean le jau Catholic priest, FR (b. 1570) |
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| francis le jau (b. 1665) |
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michel jau French official, FR (b. 1951) |
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| fabrice jau footballer, FR (b. 1978) |
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| y-y jau researcher |
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| guo-chin jau Ph.D. National Taiwan Normal University 2002 |
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| jacob ibn jau Spanish rabbi |
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| jau tang researcher |
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| raoul jau |
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| jau sie heng |
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