Family name Ilhan (Ilhan 
, Илхан 
, Ильхан 
) , all over the world, is quite a rare surname. The last name Ilhan is habitual in North Macedonia, where it is quite a rare surname, Bulgaria, and Denmark. Not in comparison with a country's population, it most frequently occurs in Germany, France, and Indonesia. More prevalently, Ilhan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ilhan | South Korea, France, Germany, Somalia, Indonesia |
| Илхан | Kazakhstan, Bulgaria, Azerbaijan, Russia, Uzbekistan |
| Ильхан | Russia, Azerbaijan, Kyrgyzstan, Uzbekistan |
|
adem ilhan British musician, GB (b. 1950) |
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| ismail ilhan TR (b. 1929) |
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| john ilhan Australian businessman (1965-2007), AU (b. 1965) |
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| musa ilhan Australian wrestler, AU (b. 1969) |
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| fatih ilhan researcher ORCID ID = 0000-0003-3037-2713 |
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| elif ilhan researcher |
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| aytac ilhan Ph.D. Princeton University 2004 |
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| burak ilhan researcher |
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| emre ilhan researcher (ORCID 0000-0002-8404-7900) |
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| mert ilhan researcher |
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| betul ilhan researcher |
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| esmanur ilhan researcher (ORCID 0000-0001-5172-9529) |
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| hamza o ilhan researcher |
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| necip ilhan researcher |
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| cagri ilhan researcher (ORCID 0000-0001-9122-2466) |
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