Around the world, Robert-Jan (Robert-Jan 
) is a rare boy's forename. The forename Robert-Jan is habitual in Western Europe, particularly Netherlands, where it is a rare masculine name, and Germany, where it is a very rare boy's name. Parts of the name also exists independently as a first name Robert, and a last name Jan.
| VARIANT | COUNTRY |
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| Robert-Jan | Germany, Belgium, United States, France, Netherlands |
| robert-jan knook Dutch news presenter, NL (b. 1968) |
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| robert-jan temmink QC 2017, GB (b. 1973) |
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| robert-jan ravensbergen Dutch association football player, NL (b. 1978) |
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| robert-jan slager researcher |
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| robert-jan de vos researcher |
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| robert-jan van putten researcher |
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| robert-jan palstra researcher |
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| robert-jan o. de muinck keizer researcher |
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| robert-jan w. quéné botanist |
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| robert-jan van suylen researcher |
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De, Burger, Peters, Pierik, Rijsdijk, Dekker, Jansen, Hertog, Hoeven, Huijsman, Visser, Vijver, Meijers, Sanders, Stroeve, Brouwer, Bruggen, Peetoom, Dekkers, Winters, Zandvoort, Versluis, Bakker, Streng, Santen, Meijer, Bos, Duk, Smid, Bais, Berg, Pouw, Dijk, Gras, Laat, Wils, Vervoort, Sterk, Brink, Broer, Bruin, Kaper, Goris, Greup, Hamel, Vries, Otten, Zwart, Baars, and Brethouwer