All around the world, Jan-Kees (Jan-Kees 
) is a very rare principally boy's, but very infrequently girly first name. The forename Jan-Kees is characteristic of Western Europe, particularly Netherlands, where it is a very rare boy's name. Parts of the name also exists independently as a last name Jan, and a first name Kees.
| VARIANT | COUNTRY |
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| Jan-Kees | United States, Germany, Netherlands |
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jan-kees wiebenga Dutch politician, NL (b. 1947) |
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| jan-kees emmer Dutch journalist, NL (b. 1965) |
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| jan-kees c. w. van ommeren Ph.D. Vrije Universiteit Amsterdam 1989 |
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| jan-kees karels (b. 1974) |
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De, Wijnen, Zuiker, Marskamp, Meyboom, Schakel, Brouwer, Koopman, Kelfkens, Geijteman, Lokerse, Janssen, Harmsen, Walrave, Wouters, Mijnders, Mulderij, Schrijver, Bennekom, Pennings, Polderman, Pijnenborg, Frings, Hartog, Nieman, Duursma, Dek, Wit, Mons, Muis, Kolk, Dane, Goud, Fait, Fels, Melse, Amsterdam, Schep, Kense, Pronk, Groot, Emmer, Huyts, Voogd, Saltet, Bruine, Karels, Rusman, Buren, and Noordijke