Cognomen Thanh (Thanh 
, Тхань 
, Тханх ) , all around the world, is a widespread last name. The family name Thanh is characteristic of Macao, where it is a common surname, Vietnam, and U.S. Virgin Islands, where it is quite a common surname (explore the name in all countries). In absolute terms, it is commonest in Vietnam, Malaysia, and China. Also, Thanh is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Thanh | Malaysia, Japan, France, Vietnam, United States |
| Тхань, Тханх | Belarus, Russia, Ukraine |
| タイン | Japan |
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thái thơ thanh (b. 1873) |
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| nguyen thanh Vietnamese revolutionary (b. 1863) |
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thanh nga Vietnamese actress and singer, VN (b. 1942) |
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| joseph lê quy thanh Roman Catholic bishop (b. 1900) |
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| hoài thanh Vietnamese writer, VN (b. 1909) |
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tai-marc le thanh French writer, FR (b. 1967) |
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kim thúy ly thanh Canadian writer, VN (b. 1968) |
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phương thanh Vietnamese singer and actress, VN (b. 1973) |
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| phạm hà thanh VN (b. 1926) |
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thanh thảo singer, VN (b. 1988) |
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| thanh tùng VN (b. 1935) |
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| anh việt thanh VN (b. 1936) |
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| thanh tùng Vietnamese musician, VN (b. 1948) |
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| đàm thanh VN (b. 1939) |
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| trương đình thanh VN (b. 1944) |
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