Cognomen Claß (Claß 
) , across the world, is a rare family name. The cognomen Claß is habitual in Western Europe, particularly Germany, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Claß | Germany |
|
heinrich claß German politician (1868-1953), DE (b. 1868) |
|
| gustav claß (b. 1836) |
|
|
| helmut claß German theologian, DE (b. 1913) |
|
|
| oliver claß Dr.rer.nat. Universität Augsburg 2009 |
|