Cognomen Klassens (Klassens 
) , all around the world, is a very rare family name. The last name Klassens is habitual in South Africa, where it is a very rare surname, Canada, where it is an extremely rare surname, and the United States. Very seldom, Klassens is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Klassens | Spain, Canada, United States, South Africa |