Last name Sak (Sak 
, サク 
, สัก 
) , across the world, is a common cognomen. The family name Sak is characteristic of Turkey, where it is quite a common surname, Belarus, and Oman, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Turkey, Poland, and Saudi Arabia. Likewise, Sak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sak | Saudi Arabia, Bangladesh, Turkey, India, Poland |
| サク | Japan |
| สัก | Thailand |
| Сак | Kazakhstan, Russia, Belarus, Armenia, Ukraine |
Causa, Orsak, Sack, Sag, Sako, Saķ, Sàk, Sák, Sâk, Sãk, Sök, Săk, Sắk, Zak, Çak, Śáķ, Šak, Сақ, סאק, סק, שאך, שאק, صآك, صأك, صاك, صاک, คุณศักดิ์, ซัค, ซาค, ตาศักดิ์, ศัก, ศักดิ์, ศักย์, ษักดิ์, ส, สรรค, สะกอ, สักก์, สาก, ຊກ, ສກ, ဆက်, သက္, သက္္, သက်, សាក, សាក់, សាគ, サキ, サック, 萨克, ﺻﺎﻙ, and Ｓak
| stanisław sak (b. 1433) |
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władysław sak standard-bearer of the Polish Army, PL (b. 1896) |
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| joseph sak Belgian priest, BE (b. 1875) |
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| václav sak (b. 1871) |
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| sak prasert LA (b. 1882) |
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| sak faslia (b. 1885) |
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| vilém sak CZ (b. 1895) |
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senol sak Turkish painter, TR (b. 1964) |
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| jan sak holocaust victim, b. 1919-11-15, CZ (b. 1919) |
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katrin sak Estonian researcher (b. 1975) |
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sak k'uk' Maya queen, MX |
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sak noel Spanish DJ and record producer, ES (b. 1983) |
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| robert sak Czech historian, CZ (b. 1933) |
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| tomáš sak HR (b. 1928) |
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mehmet sak Turkish footballer, TR (b. 1990) |
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