Family name Belak (Belak 
, Белак 
) , globally, is quite a rare surname. The last name Belak is habitual in Slovenia, where it is quite a common surname, Slovakia, and Croatia. In absolute terms, it most frequently occurs in Slovakia, Hungary, and Croatia. Much less frequently, Belak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Belak | Slovakia, Indonesia, Czechia, Hungary, Croatia |
| Белак | Ukraine, Belarus, Russia |
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stane belak-šrauf Slovene mountaineer, mountain guide and mountain rescue (1940-1995), SI (b. 1940) |
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slavko belak (b. 1932) |
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ljerka belak Slovene actress (1948–2021), SI (b. 1948) |
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teja belak Slovene gymnast, SI (b. 1994) |
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| janko belak SI (b. 1946) |
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| jan belak (b. 1950) |
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| mateja belak SI (b. 1958) |
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| andrej belak researcher ORCID ID = 0000-0001-6634-0137 |
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| urška belak researcher (ORCID 0000-0002-7668-2293) |
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| christoph belak mathematician, DE (b. 1987) |
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| jana belak SI |
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| jernej belak SI |
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| mojca belak SI |
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| urška belak SI |
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| lovro belak SI |
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