Cognomen Appelt (Appelt 
, อุทธรณ์ 
, Аппельт 
) , in the world, is quite a common last name. The last name Appelt is habitual in Germany, where it is quite a rare surname, Denmark, and Czechia. Measured by absolute frequency, it most frequently occurs in Germany, Brazil, and the United States. Very seldom, Appelt is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Appelt | Germany, Denmark, Brazil, Poland, United States |
| อุทธรณ์ | Thailand |
| Аппельт | Kazakhstan, Russia, Ukraine |
| johann appelt 1755-; Schauspieler und Schauspieldirektor (b. 1755) |
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| wilhelm appelt CZ (b. 1841) |
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| vilém appelt (b. 1842) |
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| karel appelt CZ (b. 1847) |
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| gustav appelt Austrian author, AT (b. 1864) |
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| alfred appelt DE (b. 1869) |
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| vilém appelt CZ (b. 1878) |
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karl-heinz appelt German sculptor, DE (b. 1940) |
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| rudolf appelt Czechoslovak and East German politician, diplomat, and writer (1900-1955), CZ (b. 1900) |
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| hans-dietrich appelt performer (20th century) (b. 1901) |
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kathi appelt American children's writer and writing teacher, US (b. 1954) |
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| vilém appelt (b. 1898) |
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| heinrich appelt Austrian medievalist and historian, AT (b. 1910) |
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ingo appelt German presenter, DE (b. 1967) |
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| adi appelt (b. 1911) |
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