Cognomen Iváncsics (Iváncsics 
) , all over the world, is a very rare surname. The cognomen Iváncsics is habitual in Eastern Europe, particularly Hungary, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Iváncsics | Hungary |
| mihály iváncsics Hungarian football referee (b. 1893) |
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| iváncsics mihály Hungarian association football referee (1893-1968), HU (b. 1893) |
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| jános iváncsics Hungarian university teacher, HU (b. 1938) |
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| józsef iváncsics botanist |
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