Surname Рюсс (Ruess 
, Riuss 
, Рюсс 
) , worldwide, is quite a rare cognomen. The family name Рюсс is habitual in Western Europe, particularly Austria, where it is quite a rare surname, Switzerland, and Germany. In absolute terms, it is commonest in Germany, the United States, and Austria.
| VARIANT | COUNTRY |
|---|---|
| Ruess | Germany, Austria, Switzerland, Colombia, United States |
| Riuss | United States, Philippines |
| Рюсс | Russia |