Cognomen Expert (Expert 
, อรรถกร 
, เชียวชาญ ) , all around the world, is a common last name. The cognomen Expert is habitual in Thailand, where it is quite a rare surname, United Arab Emirates, and Romania. Measured by absolute frequency, the name is most common in Thailand, Bangladesh, and France. Also, Expert is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Expert | Romania, Bangladesh, France, India, Indonesia |
| เชียวชาญ, อรรถกร | Thailand |
Experience, ชาญการ, ชำนาญการณ์, ชำนาญยนตร์, ช่างชำนิ, ผู้เชี่ยวชาญ, พุฒิภาษ, สันทัดกรการ, เดชเชี่ยวชาญ, and ไวทยการ
| marie expert 16 Feb 1790 Châlus - 21 Jan 1877 Châlus (b. 1790) |
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henri expert French writer and musicologist, FR (b. 1863) |
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| marie expert French Righteous Among the Nations, FR (b. 1867) |
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| roger-henri expert French architect, FR (b. 1882) |
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| jean henri barthélémy expert (b. 1883) |
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nadine expert FR (b. 1957) |
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| jacques expert French journalist, FR (b. 1956) |
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| valérie expert French journalist, FR (b. 1963) |
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