Cognomen Duijker (Duijker 
) , all around the world, is a rare surname. The cognomen Duijker is characteristic of Netherlands, where it is a rare surname, Spain, where it is a very rare surname, and Brazil, where it is an extremely rare surname. Much less frequently, Duijker is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Duijker | Brazil, Netherlands, Spain |
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bert duijker Dutch curator and psychologist (1912-1983), NL (b. 1912) |
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| ben duijker Dutch cyclist (1903-1990), NL (b. 1903) |
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| hubertus carl johannes duijker Ph.D. Universiteit van Amsterdam 1946 |
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| rick duijker chess player (b. 1981) |
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Ben, Thijs, Emile, Eelco, Hanny, Frank, Margit, Bianca, Pieter, Robert, Debbie, Daphne, Dorian, Djoeke, Janine, Jannie, Jeroen, Wouter, Marinde, Maarten, Jerry, Lotje, Louis, Daisy, Rob, Jan, J H, J G, E S, Mark, Ruud, Dewi, Dino, Monique, Loek, Nick, Hans, Ilse, Mandy, Mieke, Chris, Ramon, Remco, Danny, Theo, and Melissa