Cognomen Holtkamp (Holtkamp 
) , across the world, is quite a common surname. The family name Holtkamp is characteristic of Eswatini, where it is quite a rare surname, Netherlands, and Germany. Not in comparison with a country's population, it is the most numerous in Germany, Netherlands, and the United States.
| VARIANT | COUNTRY |
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| Holtkamp | Germany, Eswatini, Argentina, United States, Netherlands |
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fred holtkamp American college football coach (1889-1944), US (b. 1889) |
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| heinrich wilhelm holtkamp (b. 1865) |
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| walter holtkamp (b. 1894) |
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| annelda holtkamp American religious sister, US (b. 1917) |
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lauren holtkamp professional basketball referee, US (b. 1980) |
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| cees holtkamp NL (b. 1942) |
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| annabel holtkamp German athletics competitor, DE (b. 1955) |
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| wilhelm holtkamp (b. 1953) |
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| wilfried holtkamp (b. 1953) |
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| cyril holtkamp Dutch association football player, NL (b. 1967) |
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| lars holtkamp German professor, DE (b. 1969) |
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| jürgen holtkamp (b. 1963) |
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| maria e. holtkamp (b. 1968) |
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| ralf holtkamp (b. 1969) |
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| andreas holtkamp Dr. rer. nat. Rheinisch-Westfälische Technische Hochschule Aachen 2013 |
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