All over the world, Sjirk (Sjirk 
) is a very rare boy's first name. The first name Sjirk is characteristic of Western Europe, particularly Netherlands, where it is a rare masculine name. Much less frequently, Sjirk is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sjirk | Netherlands, Poland, Australia, New Zealand, South Africa |
| sjirk de wal NL (b. 1852) |
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| sjirk linses van der burg politician, NL (b. 1863) |
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| sjirk frânses van der burg Dutch veterinarian (1917-2008), NL (b. 1917) |
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| sjirk geerts researcher |
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| sjirk westra researcher |
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Kok, Pitstra, Duiker, Geerts, Giliam, Joustra, Visser, Venema, Overal, Westra, Brouwer, Kuipers, Ritsema, Haarsma, Heerema, Zijlstra, Langhout, Hoekstra, Jorritsma, Hatenboer, Wittermans, Nieuwenhuis, Koster, Boorsma, Bajema, Bangma, Zee, Bolt, Boer, Post, Goot, Jong, Veen, Ament, Bouma, Bijma, Van Der Werff, Romph, Groot, Heins, Velde, Vries, Werff, Meijer, Sietsma, Sminia, Altena, Attema, Rypma, and Van Der Meulen