Last name Rys (Ris 
, Rys , Raij 
) , across the world, is a common surname. The cognomen Rys is habitual in Czechia, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Bosnia and Herzegovina. Not in comparison with a country's population, this name is the most popular in Indonesia, Poland, and the United States. Also, Rys is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ris | Czechia, Malaysia, Poland, United States, Indonesia |
| Rys | Czechia, Malaysia, Poland, Indonesia, United States |
| Raij | Netherlands, Malaysia, India, United States, Morocco |
| Рысь | Belarus, Kazakhstan, Kyrgyzstan, Russia |
| jan rys CZ (b. 1869) |
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| břeněk rys CZ (b. 1873) |
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| františek rys CZ (b. 1877) |
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| josef rys CZ (b. 1880) |
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| jiří rys (b. 1897) |
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| jacques-henry rys French conductor, FR (b. 1909) |
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| ladislav j. rys AT (b. 1900) |
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| jiří rys CZ (b. 1901) |
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| c. gus rys American politician, US (b. 1912) |
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| józef rys Polish Righteous Among the Nations, PL (b. 1918) |
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| alois rys CZ (b. 1909) |
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| jan rys Czechoslovak photographer, CZ (b. 1929) |
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| františek rys (b. 1919) |
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| jan rys Austrian author and translator (1931-1986), AT (b. 1931) |
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| miroslav rys Czech footballer and ice hockey player, CZ (b. 1932) |
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