Surname Рости (Rosty 
, Rosti 
, Рости 
) , across the world, is quite a rare cognomen. The cognomen Рости is habitual in San Marino, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Finland. Measured by absolute frequency, it is commonest in Switzerland, Italy, and Finland. Also, Рости is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rosty | Indonesia, Malaysia, United States, Cameroon, Democratic Republic of the Congo |
| Rosti | Indonesia, Italy, Switzerland, Finland, Democratic Republic of the Congo |
| Рости | Russia |