Cognomen Kai-Helge (Kai-Helge 
) , across the world, is an extremely rare family name. Much more prevalently, Kai-Helge is the forename as well as the last name. Parts of the name also exists independently as a first name Kai, and a first name Helge.
| VARIANT | COUNTRY |
|---|---|
| Kai-Helge | Germany, Norway |
Mathilassi, and Brandhorst