Cognomen Čermak (Čermak 
, Чермак 
) , all over the world, is a rare family name. The last name Čermak is characteristic of Croatia, where it is quite a rare surname, Czechia, where it is a rare surname, and Slovenia. In absolute terms, it most frequently occurs in Ukraine, Russia, and Croatia.
| VARIANT | COUNTRY |
|---|---|
| Čermak | Croatia, Slovenia, Czechia |
| Чермак | Kazakhstan, Ukraine, Russia |
| karl čermak Czech publicist (1881-1924), DE (b. 1881) |
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vlado čermak Slovene swimming coach, SI (b. 1949) |
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| ivan čermak Croatian soldier and politician, HR (b. 1949) |
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| miša čermak SI (b. 1957) |
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| ana marija marjanović čermak researcher (ORCID 0000-0002-9477-1329) |
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| leonarda čermak |
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