In all the world, Helder-Claus (Helder-Claus 
) is an extremely rare unknown gender forename. Much more frequently, Helder-Claus is the last name as well as the forename. Parts of the name also exists independently as a first name Helder, and a first name Claus.
| VARIANT | COUNTRY |
|---|---|
| Helder-Claus | Netherlands |