Last name Jansen-Byrkit (Jansen-Byrkit 
) , in the entire world, is an extremely rare family name. The cognomen Jansen-Byrkit is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Jansen, and a last name Byrkit.
| VARIANT | COUNTRY |
|---|---|
| Jansen-Byrkit | United States |