Cognomen Baillet (Baillet 
, 巴耶, Байе 
) , in all the world, is quite a common last name. The surname Baillet is habitual in Western Europe, particularly France, where it is quite a rare surname, Luxembourg, and Belgium. Not in comparison with a country's population, it is commonest in France, Belgium, and Ivory Coast. Much less frequently, Baillet is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Baillet | Belgium, Mexico, France, Ivory Coast, Niger |
| Байе | Russia |
| jean ii baillet French jurist, FR (b. 1400) |
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| thibault baillet French jurist, FR (b. 1445) |
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| jean iii baillet Roman Catholic bishop, FR (b. 1450) |
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adrien baillet French scholar, FR (b. 1649) |
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| christophe ernest de baillet Belgian judge (1668-1732), BE (b. 1668) |
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maximilien antoine baillet de latour General in Austrian service (1737-1806), FR (b. 1737) |
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| carl baillet (b. 1685) |
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| emmanuel a s. alberto baillet Roman Catholic bishop (1702-1773) (b. 1702) |
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joseph de baillet politician (1787-1861), BE (b. 1787) |
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| jean de baillet Dutch politician, BE (b. 1757) |
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eugène baillet French chansonnier and poet, FR (b. 1829) |
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| henri jean de baillet Dutch politician, NL (b. 1785) |
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| ferdinand de baillet Belgian politician, BE (b. 1789) |
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| hyacinthe de baillet Belgian politician, BE (b. 1798) |
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georges baillet French actor (1848-1935), FR (b. 1848) |
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