In the world, Bert-Jan (Bert-Jan 
) is a very rare boy's forename. The given name Bert-Jan is characteristic of Western Europe, particularly Netherlands, where it is a rare masculine name. Parts of the name also exists independently as a first name Bert, and a last name Jan.
| VARIANT | COUNTRY |
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| Bert-Jan | United Kingdom, Netherlands, South Africa, United States, France |
| bert-jan houtzagers Dutch lawyer, NL (b. 1958) |
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| bert-jan h van den born researcher (ORCID 0000-0003-0943-4393) |
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| bert-jan roosenschoon researcher |
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De, Kuiper, Pulles, Dinter, Jansen, Esenkbrink, Hartog, Hofmeester, Visser, Ijpelaar, Walker, Woertman, Brouwer, Rietberg, Ruissen, Dierink, Landman, Vriezen, Hakvoort, Teunissen, Haverkamp, Westerink, Kuster, Bremer, Bonhof, Borsje, Bos, Vis, Baas, Bout, Boer, Kist, Klop, Pals, Grun, Bondt, Bloemendaal, Pauly, Douma, Evers, Zoetbrood, Meijer, Mulder, Simons, Sollie, Stroop, Bakker, Bezema, Prins, and Van Der Laan