In all the world, Janjaap (Janjaap 
) is a very rare boy's forename. The forename Janjaap is habitual in Western Europe, particularly Netherlands, where it is a rare boy's name.
| VARIANT | COUNTRY |
|---|---|
| Janjaap | United States, Netherlands |
|
janjaap ruijssenaars NL (b. 1973) |
|
| janjaap semeijn NL (b. 1956) |
|
|
| janjaap van der net researcher (ORCID 0000-0003-2606-5104) |
|
|
| janjaap rijpkema |
|
Ree, Eerten, Visser, Fleurke, Werven, Zeiger, Zeydner, Modderman, Meester, Jonker, Goudsbloem, Voortman, Wijnker, Jagtenberg, Tenhaeff, Blankespoor, Winkelman, Wesseldijk, Zollinger, Nijhuis, Van Der Ven, Jansen, Dekker, Wal, Mark, Baar, Boer, Kamp, Post, Dijk, Jaap, Diemel, Nell, Stork, Botvliet, Vries, Semeijn, Struis, Schenk, Kleine, Rixten, Haan, and Van Der Mark