Cognomen Plump (Plomp 
, Plump 
, ก้อนน่วม) , worldwide, is quite a rare last name. The surname Plump is characteristic of Western Europe, particularly Netherlands, where it is quite a common surname, Belgium, where it is a rare surname, and Germany. Not in comparison with a country's population, it is commonest in Netherlands, the United States, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Plomp | United States, South Africa, Netherlands, Germany, Canada |
| Plump | United States, Switzerland, Belgium, Germany, Canada |
| carl ferdinand plump DE (b. 1800) |
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| ernst ferdinand plump DE (b. 1839) |
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bobby plump American basketball player, US (b. 1936) |
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| nikolaus plump DE (b. 1923) |
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| dave plump American football defensive back, US (b. 1942) |
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| andrew s plump researcher |
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| bobby plump college basketball player (1958–1958) Butler |
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| detlef plump Dr.-Ing. Universität Bremen 1993 |
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| emil plump |
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| julia plump German association football player, DE (b. 1998) |
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