Last name Šach (Šach 
) , in all the world, is a rare cognomen. The family name Šach is habitual in Czechia, where it is quite a rare surname, and Croatia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Šach | Czechia, Croatia |
| jan boleslav šach CZ (b. 1825) |
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| josef šach CZ (b. 1886) |
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| františek šach (b. 1897) |
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| josef šach CZ (b. 1919) |
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| josef šach CZ (b. 1925) |
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| miroslav šach (b. 1926) |
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| josef šach (b. 1932) |
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| tomáš šach Czechoslovak canoeist, CZ (b. 1947) |
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| františek šach CZ (b. 1948) |
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| josef šach CZ (b. 1958) |
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| jan šach CZ (b. 1970) |
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