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 | Australia, Germany, United States, Netherlands, Indonesia |
| trevor gruis college basketball player (2011–2014) South Dakota |
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| vincent gruis Dutch academic |
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| kirsten l gruis researcher |
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| nelleke a gruis researcher |
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