Last name Гройс (Grojs 
, Grois 
, Groys 
) , throughout the world, is a rare surname. The cognomen Гройс is characteristic of Austria, where it is quite a rare surname, Czechia, where it is a rare surname, and Switzerland. In absolute terms, it is the most numerous in Austria, Germany, and the United States. Very seldom, Гройс is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grojs | Poland |
| Grois | Austria, Germany, Switzerland, Czechia, United States |
| Groys | Germany, United States, India, Bulgaria |
| Гройс | Ukraine, Russia |
| любен гройс Bulgarian director, BG (b. 1934) |
|