Surname Ocak (Ocak 
, Оджак 
, Ocax) , all over the world, is a common family name. The last name Ocak is habitual in Turkey, where it is quite a common surname, Serbia, where it is quite a rare surname, and Belgium. Measured by absolute frequency, the name is most common in Turkey, Germany, and Belgium.
| bekir sıtkı ocak politician, TR (b. 1881) |
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f. tulga ocak Turkish academic, TR (b. 1946) |
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| osman ocak Turkish politician, TR (b. 1901) |
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| faik ocak Turkish politician, TR (b. 1906) |
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| mehmet kamil ocak Turkish politician (1914–1969), TR (b. 1914) |
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| ocak işık yurtçu Turkish journalist, TR (b. 1945) |
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| ahmet yaşar ocak Turkish historian, TR (b. 1945) |
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| vefahan ocak TR (b. 1946) |
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| hasan ocak TR (b. 1965) |
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| meltem ocak researcher |
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| umut ocak researcher |
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| metin ocak researcher |
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| atila ocak Turkish botanist, TR |
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| iclal ocak researcher |
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| mert ocak researcher |
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