Family name Рудольфи (Rudolphy 
, Rudolfi 
, Rudolphi 
) , in all the world, is quite a rare cognomen. The last name Рудольфи is characteristic of Georgia, where it is quite a rare surname, Germany, and Switzerland, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Netherlands. Very seldom, Рудольфи is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rudolphy | Netherlands, United States, Germany, Democratic Republic of the Congo, Chile |
| Rudolfi | Hungary, United States, Germany, Georgia, Croatia |
| Rudolphi | Netherlands, Switzerland, United States, Germany, Poland |