Last name Kastler (Kastler 
, Кастлер 
) , all around the world, is quite a rare family name. The surname Kastler is habitual in Austria, where it is quite a rare surname, Slovakia, and Germany, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Germany, the United States, and France.
| VARIANT | COUNTRY |
|---|---|
| Kastler | France, Austria, Slovakia, United States, Germany |
| Кастлер | Ukraine |
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alfred kastler French physicist, FR (b. 1902) |
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| henri kastler French philatelist, FR (b. 1863) |
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daniel kastler French physicist, FR (b. 1926) |
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| jules kastler FR (b. 1867) |
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martin kastler German politician, DE (b. 1974) |
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| hans kastler Austrian sculptor (1931-2016), AT (b. 1931) |
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| claude kastler French slavist (1936-2011), FR (b. 1936) |
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| raymond kastler French politician, FR (b. 1948) |
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| raimund kastler AT (b. 1966) |
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| marcel kastler researcher |
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| guy kastler 20th and 21st-century farmers and peasants rights advocate |
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| adrian kastler researcher (b. 1984) |
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| ludmila kastler |
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| heide kastler BE |
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| fred kastler |
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