Surname Horňáček (Horňáček 
) , in all the world, is a very rare last name. The family name Horňáček is habitual in Eastern Europe, particularly Slovakia, where it is a rare surname, and Czechia.
| jan horňáček SK (b. 1907) |
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| ludvík horňáček (b. 1929) |
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| vlastimil horňáček (b. 1932) |
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| michal horňáček researcher |
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| josef horňáček |
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