Last name Группер (Gruper 
, Группер 
, Grupper 
) , in all the world, is a rare family name. The last name Группер is characteristic of Romania, where it is a rare surname, Switzerland, and Israel. Measured by absolute frequency, it is commonest in the United States, Romania, and Switzerland. Very seldom, Группер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gruper | Israel, France, Romania, United States, Italy |
| Группер | Russia |
| Grupper | Netherlands, Israel, Switzerland, France, United States |