Cognomen Plank (Plank 
, Planca 
, Planke 
) , across the world, is a common last name. The last name Plank is characteristic of Austria, where it is quite a common surname, Germany, where it is quite a rare surname, and Hungary. Not in comparison with a country's population, it most frequently occurs in the United States, Germany, and Austria. Much less frequently, Plank is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Plank | United Kingdom, United States, Germany, Austria, Hungary |
| Planca | Philippines, Brazil, Argentina, New Zealand, Italy |
| Planke | Brazil, Norway, Canada, United States, Germany |
| Планк | Russia, Bulgaria, Ukraine |
| andreas plank Austrian priest and politician (1356–1435), councellor of the Dukes Albert IV. and Albert V. of Austria, AT (b. 1356) |
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| johann plank (b. 1567) |
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| philipp plank DE (b. 1660) |
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| beda plank Austrian author (1741-1830), AT (b. 1741) |
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| lukáš plank CZ (b. 1737) |
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josef plank Austrian painter (1815-1901), AT (b. 1815) |
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fritz plank AT (b. 1848) |
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eddie plank American baseball player (1875-1926), US (b. 1875) |
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hans plank sculptor from Austria, AT (b. 1878) |
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| elisha newton plank American botanical collector (1831 - 1907), US (b. 1831) |
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rudolf plank German engineer (1886-1973), DE (b. 1886) |
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| emma plank DE (b. 1837) |
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| hans plank Austrian judge and local historian, AT (b. 1850) |
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| d. heber plank (b. 1842) |
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| ernst plank DE (b. 1844) |
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