Globally, Wiljan (Wiljan 
) is a rare male given name. The first name Wiljan is characteristic of Netherlands, where it is a rare masculine name, Philippines, where it is a very rare boy's name, and India, where it is an extremely rare principally masculine, but scarcely feminine name. Much less frequently, Wiljan is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Wiljan | Netherlands, Philippines, Germany, France, India |
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wiljan vloet Dutch footballer and manager, NL (b. 1962) |
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| wiljan van den akker Dutch poet and university professor, NL (b. 1954) |
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| wiljan van vijfeijken NL (b. 1959) |
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| wiljan pluim Dutch association football player, NL (b. 1989) |
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Hof, Spronk, Slofstra, Bansag, Becker, Bekker, Bosman, Koster, Linden, Jansen, Hekman, Visser, Franck, Peeters, Linders, Nijhuis, Nijland, Willems, Koopmans, Koetsier, Dorrepaal, Lucassen, Sangma, Mulder, Meijvogel, Meijer, Maas, Beek, Kolk, Koot, Knot, Haas, Marak, Matos, Siroo, Arces, Hendriks, Cools, Poppe, Poels, Pitlo, Derks, Daris, Jobse, Table, Evers, Harms, Hoven, Koele, and Timmermans