Surname Flatt (Flatt 
, フラット 
, Флетт 
) , in all the world, is quite a common last name. The cognomen Flatt is characteristic of Botswana, where it is quite a rare surname, Switzerland, and the United States. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Flatt | United Kingdom, United States, Botswana, Canada, Germany |
| フラット | Japan |
| Флетт | Ukraine |
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johann friedrich flatt German philosopher and theologian, DE (b. 1759) |
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jerzy beniamin flatt Polish agronomist, PL (b. 1768) |
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| johann jacob flatt (b. 1724) |
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| carl christian von flatt German theologian, DE (b. 1772) |
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| johann christian flatt Dr. phil. Eberhard-Karls-Universität Tübingen 1795, DE (b. 1800) |
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| johann gottlob flatt DE (b. 1798) |
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flattné gizella (1870--1943) opera singer, HU (b. 1870) |
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| endre flatt RS (b. 1817) |
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| oskar flatt PL (b. 1822) |
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| john ira flatt Canadian politician (1834-1913), CA (b. 1834) |
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| flatt károly botanist (1853-1906), HU (b. 1853) |
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| leslie neeve flatt Leslie Neeve Flatt (1889-1958) 1958 Obituary [1] (b. 1889) |
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| leslie neave flatt 1889-1957 (b. 1889) |
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| lester flatt American singer-songwriter, US (b. 1914) |
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bruce flatt CEO of Brookfield Asset Management, CA (b. 1965) |
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