Cognomen Rydval (Rydval 
) , all over the world, is a rare family name. The cognomen Rydval is characteristic of Czechia, where it is quite a rare surname, Germany, where it is an extremely rare surname, and Brazil.
| VARIANT | COUNTRY |
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| Rydval | Czechia, Brazil, Germany |
| františek rydval CZ (b. 1909) |
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| josef rydval CZ (b. 1915) |
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| františek rydval ski jumper, CZ (b. 1946) |
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| rudolf rydval CZ (b. 1940) |
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| jan rydval CZ (b. 1952) |
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| petr rydval Czech soccer player, CZ (b. 1968) |
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| miloš rydval researcher, ORCID id # 0000-0001-5079-2534 |
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| michal rydval (b. 1973) |
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| slávek rydval (b. 1976) |
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| ondřej rydval (b. 1978) |
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