Last name Kocabaş (Kocabaş 
) , worldwide, is a common surname. The cognomen Kocabaş is habitual in Turkey, where it is quite a common surname, Belgium, where it is a very rare surname, and China, where it is an extremely rare surname.
| VARIANT | COUNTRY |
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| Kocabaş | Turkey, Germany, China, Belgium, United States |
| hüseyin kocabaş (b. 1909) |
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bertul kocabaş Turkish footballer, DE (b. 1992) |
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| şakir kocabaş TR (b. 1945) |
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| ufuk kocabaş Turkish university teacher, TR (b. 1968) |
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| hüsnü kocabaş Dutch boxer, NL (b. 1979) |
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| şükrü ekin kocabaş researcher |
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| pınar kocabaş researcher (ORCID 0000-0001-9788-2019) |
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| uğur kocabaş researcher |
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| muhammet kocabaş researcher (ORCID 0000-0002-6473-4164) |
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| tuğbey kocabaş researcher |
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| didem sutay kocabaş researcher (ORCID 0000-0002-5689-8521) |
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| umut kocabaş researcher |
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| alperen kocabaş Turkish association football player, TR (b. 1998) |
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