Cognomen Lněnička (Lněnička 
) , around the globe, is a rare family name. The cognomen Lněnička is habitual in Eastern Europe, particularly Czechia, where it is quite a rare surname.
| VARIANT | COUNTRY |
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| Lněnička | Czechia |
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františek lněnička Austrian military personnel (1898-1964), CZ (b. 1898) |
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| václav lněnička CZ (b. 1893) |
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| františek lněnička (b. 1893) |
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| františek lněnička (b. 1902) |
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| antonín lněnička Czechoslovak painter, CZ (b. 1920) |
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| václav lněnička Czechoslovak member of Czechoslovak parliament, Czechoslovak politician and mayor, CZ (b. 1927) |
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| antonín lněnička Czech painter, CZ (b. 1934) |
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| jaroslav lněnička CZ (b. 1957) |
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| petr lněnička Czech actor, CZ (b. 1979) |
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| tomáš lněnička CZ (b. 1973) |
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| libor lněnička CZ (b. 1980) |
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| tomáš lněnička Czech footballer, CZ (b. 1999) |
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