Cognomen Placke (Plack 
, Placke 
) , in the world, is quite a rare surname. The family name Placke is habitual in Eswatini, where it is quite a rare surname, Germany, and the United States, where it is a rare surname. Measured by absolute frequency, it is commonest in Germany, the United States, and Brazil. Much less frequently, Placke is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Plack | Germany, Egypt, Eswatini, United States, Brazil |
| Placke | Germany, Belgium, United Kingdom, United States, Argentina |
| georg placke German politician and entrepreneur (1848-1930), DE (b. 1848) |
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| norbert placke German association football player, DE (b. 1958) |
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| bärbel placke (b. 1969) |
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| tobias placke researcher, ORCID id # 0000-0002-2097-5193 |
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| jan-malte placke researcher (ORCID 0000-0002-7842-4669) |
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| august placke American gymnast, US |
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| marvin placke college basketball player (1954–1955) Houston |
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