Last name Gruis (Gruis 
) , in the world, is a rare cognomen. The last name Gruis is habitual in Netherlands, where it is a rare surname, Germany, and the United States. Much less frequently, Gruis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gruis | Germany, Indonesia, Australia, United States, Netherlands |
| trevor gruis college basketball player (2011–2014) South Dakota |
|
|
| vincent gruis Dutch academic |
|
|
| kirsten l gruis researcher |
|
|
| nelleke a gruis researcher |
|