Surname Helder-Claus (Helder-Claus 
) , in all the world, is an extremely rare cognomen. The last name Helder-Claus is habitual in Western Europe, particularly Netherlands, where it is a very rare surname. Parts of the name also exists independently as a first name Helder, and a first name Claus.
| VARIANT | COUNTRY |
|---|---|
| Helder-Claus | Netherlands |