Cognomen Kaynak (Kaynak 
, Кайнак 
, Каынак ) , across the world, is a common surname. The cognomen Kaynak is characteristic of Turkey, where it is quite a common surname, Bosnia and Herzegovina, where it is quite a rare surname, and Moldova. In absolute terms, this name is the most popular in Turkey, Germany, and Bosnia and Herzegovina.
| sadettin kaynak Turkish composer, TR (b. 1895) |
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veysi kaynak Turkish politician, TR (b. 1962) |
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orhan kaynak Turkish association football player, TR (b. 1970) |
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| mahir kaynak Turkish intelligence officer, TR (b. 1934) |
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| erol kaynak Turkish footballer, TR (b. 1934) |
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| şükran kaynak TR (b. 1937) |
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| reşit kaynak Turkish association football player (1952-1999), TR (b. 1952) |
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| i̇rfan kaynak association football player (1956-1993), TR (b. 1956) |
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| nazım kaynak TR (b. 1947) |
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| ayhan kaynak association football player, TR (b. 1967) |
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| ebba kaynak DE (b. 1957) |
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| bogac l kaynak researcher (ORCID 0000-0002-6946-9603) |
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| murat kaynak researcher |
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| mustafa kaynak researcher |
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| i̇pek türktan kaynak Turkish actress, TR |
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