Surname Kaj-Erik (Kaj-Erik 
) , in all the world, is an extremely rare last name. The last name Kaj-Erik is habitual in Northern Europe, particularly Finland, where it is a very rare surname. More prevalently, Kaj-Erik is the forename as well as the last name. Parts of the name also exists independently as a first name Kaj, and a first name Erik.
| VARIANT | COUNTRY |
|---|---|
| Kaj-Erik | United States, Finland |