Cognomen Flak (Flak 
, Flaga , Flach ) , throughout the world, is a common surname. The cognomen Flak is characteristic of Poland, where it is quite a rare surname, Germany, and Guinea-Bissau. Measured by absolute frequency, it is commonest in Germany, Poland, and Brazil. Likewise, Flak is the forename as well as the last name.
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micheline flak French yoga teacher, writer and translator (b. 1934) |
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| jakub flak Polish Righteous Among the Nations, PL (b. 1900) |
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| antonina flak Polish Righteous Among the Nations, PL (b. 1903) |
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| august flak PL (b. 1895) |
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| jan flak PL (b. 1904) |
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| władysława flak Polish Righteous Among the Nations, PL (b. 1926) |
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| gisela flak PL (b. 1923) |
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| pravoslav flak CZ (b. 1932) |
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| edward flak Polish politician and deputy, PL (b. 1948) |
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| jan flak CZ (b. 1939) |
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| olaf flak Polish teacher, PL (b. 1950) |
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| florentyna flak Polish sportsperson and athletics competitor, PL (b. 1952) |
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| hervé flak French association football player, FR (b. 1957) |
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| roman flak PL (b. 1951) |
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| pravoslav flak (b. 1954) |
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