Family name Olšar (Olšar 
) , all over the world, is a rare last name. The surname Olšar is habitual in Eastern Europe, particularly Czechia, where it is a rare surname.
| karel olšar Czech priester and Prague canon (b. 1915) |
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| erich olšar CZ (b. 1906) |
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| ladislav olšar CZ (b. 1908) |
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| ladislav olšar CZ |
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