Last name Ryssy (Ryssy 
) , in the world, is a rare cognomen. The family name Ryssy is habitual in Finland, where it is quite a rare surname, and Germany, where it is an extremely rare surname. Also, Ryssy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ryssy | Germany, Finland, United States, Brazil, Democratic Republic of the Congo |
| joonas ryssy researcher |
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