Cognomen Olech (Olech 
, Олех 
, Олеш ) , worldwide, is quite a common surname. The surname Olech is characteristic of Eastern Europe, particularly Poland, where it is quite a rare surname, Ukraine, and Belarus, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Poland, Ukraine, and the United States. Likewise, Olech is the forename as well as the last name.
| jerzy olech PL (b. 1757) |
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olech szczepski Polish pediatrician, PL (b. 1914) |
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kazimierz olech Polish mountaineer, PL (b. 1928) |
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czesław olech Polish mathematician (1931-2015), PL (b. 1931) |
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joanna olech Polish author and illustrator, PL (b. 1955) |
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jan olech PL (b. 1951) |
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| halina olech Pools, PL (b. 1922) |
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| żelisław olech PL (b. 1915) |
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| mieczysław olech (b. 1921) |
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| zbigniew olech Polish sportsperson (1940-2008), PL (b. 1940) |
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| artur olech Polish boxer (1940-2010), PL (b. 1940) |
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| maria olech Polish mycologist and lichenologist, PL (b. 1941) |
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| adam olech Polish philosopher, PL (b. 1953) |
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| janusz olech Polish fencer, PL (b. 1965) |
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| jarosław olech Polish sportsperson, PL (b. 1974) |
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