Cognomen Řihák (Řihák 
) , across the world, is a rare family name. The family name Řihák is habitual in Eastern Europe, particularly Czechia, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Řihák | Czechia |
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metoděj řihák Czech Roman Catholic priest, CZ (b. 1885) |
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| josef řihák (b. 1868) |
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josef řihák Czech member of Czech Parliament (2002–2010) and veterinary, CZ (b. 1959) |
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| zdeněk řihák CZ (b. 1924) |
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| jaroslav řihák CZ (b. 1927) |
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| petr řihák Czech basketball player (1963-), CZ (b. 1963) |
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| milan řihák (b. 1965) |
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| milan řihák (b. 1977) |
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| pavel řihák CZ (b. 1989) |
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