Cognomen Ischer (Ischer 
) , around the world, is a rare family name. The cognomen Ischer is habitual in Switzerland, where it is quite a rare surname, Austria, where it is a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Switzerland, China, and the United States. Very seldom, Ischer is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ischer | Japan, China, Switzerland, United States, France |
| gottfried ischer (1832-1896), CH (b. 1832) |
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| theophil ischer (1885-1954), CH (b. 1885) |
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| adolphe ischer Swiss teacher and naturalist (1904-1985), CH (b. 1904) |
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| yvan ischer Swiss author, CH (b. 1961) |
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| markus ischer CH (b. 1979) |
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