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Cognomen Iantsen (Янцен
, Iantsen
) , in the world, is quite a rare family name. The cognomen Iantsen is characteristic of Kazakhstan, where it is quite a rare surname, Kyrgyzstan, and Russia, where it is a rare surname. In absolute terms, it is commonest in Kazakhstan, Russia, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Янцен | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Iantsen | United States |