Last name Udatný (Udatný 
) , across the world, is a very rare surname. The surname Udatný is habitual in Eastern Europe, particularly Czechia, where it is a rare surname.
| jaroslav udatný Czechoslovak soldier, CZ (b. 1910) |
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| jiří udatný (b. 1932) |
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| vilém udatný Czech dubbing actor and actor, CZ (b. 1969) |
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| ctirad udatný (b. 1969) |
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