Family name Lach (拉 
, Lach 
, Лах 
) , around the world, is a common surname. The cognomen Lach is characteristic of Eastern Europe, particularly Poland, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Czechia. In absolute terms, the name is most common in China, Poland, and Germany. Also, Lach is the forename as well as the last name.
| andreas lach Austrian painter (1817-1882), AT (b. 1817) |
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| katharina amalia lach singer, AT (b. 1820) |
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robert lach Austrian musicologist, poet and composer (1874-1958), AT (b. 1874) |
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| fritz lach Austrian painter (1868-1933), AT (b. 1868) |
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elmer lach Canadian ice hockey player, CA (b. 1918) |
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| michał lach Polish Righteous Among the Nations, PL (b. 1874) |
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| petronela lach Polish Righteous Among the Nations, PL (b. 1879) |
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| franz lach Austrian politician (1887-1948), AT (b. 1887) |
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| alice lach Austrian actress (1893-1969), AT (b. 1893) |
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| kazimierz lach UA (b. 1886) |
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| walter robert lach Austrian cinematographer and film producer, AT (b. 1901) |
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| aleksander lach (b. 1892) |
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günter lach German politician, DE (b. 1954) |
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| ján j. lach (b. 1897) |
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| josip lach (b. 1899) |
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