All around the world, Isach (Isach 
) is a very rare unisex given name. The given name Isach is habitual in Brazil, where it is a very rare male name, Nigeria, where it is an extremely rare female name, and India, where it is an extremely rare unisex name. Likewise, Isach is the last name as well as the forename.
| isach jørgen coldevin (b. 1724) |
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| isach hambro (1782-1865) (b. 1782) |
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| isach e. e. ascoli Jewish Italian rabbi and teacher (1808–1875), IT (b. 1808) |
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| isach isachsen Norwegian politician (b. 1845) |
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| isach coldevin (b. 1877) |
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