Cognomen Knottenbelt (Knottenbelt 
) , all over the world, is a rare last name. The surname Knottenbelt is habitual in Netherlands, where it is a rare surname, New Zealand, and Australia, where it is a very rare surname. Measured by absolute frequency, it is commonest in Netherlands, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
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| Knottenbelt | Australia, South Africa, New Zealand, United Kingdom, Netherlands |
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hendrik johan knottenbelt Dutch lawyer and politician, NL (b. 1874) |
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| johannes knottenbelt Dutch politician (1870-1950), NL (b. 1870) |
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| willemina johanna alberta knottenbelt NL (b. 1898) |
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| josef knottenbelt Dutch tennis player, NL (b. 1910) |
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| martin knottenbelt Dutch activist, NL (b. 1920) |
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| marianna knottenbelt Dutch-Canadian photographer, architect and real-estate developer, NL (b. 1949) |
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| derek knottenbelt researcher, ORCID id # 0000-0001-9523-1116 (b. 1950) |
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| clare knottenbelt researcher (ORCID 0000-0001-5757-3799) |
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| william john knottenbelt Ph.D. Imperial College London 2000 |
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| william knottenbelt researcher (ORCID 0000-0002-8490-1011) |
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| mieneke knottenbelt |
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Mr, Peter, Rosie, David, Gaike, Grant, Lorna, Jozef, Hilde, Frans, Karen, Frits, Yulia, Marijn, Martyn, Maggie, Michel, Sheila, Cedric, Rogier, Graham, Wendy, Cindy, Craig, Adela, Ms, Mel, Sue, Bas, Joe, Ian, Mike, Anna, Anke, Daan, Luca, Lucy, John, Joke, Theo, Ella, Hein, Will, Morna, Sandy, Anita, Eugene, and Hamish