In all the world, Kalnein (Kalnein 
) is an extremely rare unknown gender forename. Predominantly, Kalnein is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kalnein | Austria, Germany |
| albrecht von kalnein (b. 1611) |
|
|
| wolf henrik von kalnein Prussian noblemen in Danish service, IE |
|