Family name Sayan (Sayan 
, สายันต์ , สายัณห์ , and others...) , in the world, is a common last name. The family name Sayan is characteristic of Turkey, where it is quite a common surname, Peru, where it is quite a rare surname, and Qatar. Measured by absolute frequency, it is the most numerous in Turkey, India, and Thailand. More prevalently, Sayan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sayan | Bangladesh, Turkey, India, Thailand, Peru |
| สายัญ, สายัณ, สายันต์, สายัณห์ | Thailand |
| Саян | Kazakhstan, Russia, Armenia, Azerbaijan, Ukraine |
| Сайан | Kazakhstan, Russia |
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levon sayan French-Armenian impresario, producer, and operatic tenor, FR (b. 1934) |
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diego garcia sayan Peruvian politician, PE (b. 1950) |
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| erol sayan Turkish composer, TR (b. 1936) |
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| mustafa sayan Turkish musician, TR (b. 1945) |
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| gıyasettin sayan Turco-German politician, DE (b. 1950) |
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| sayan paratanavong Thai sprinter, TH (b. 1951) |
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| seda sayan Turkish singerguzel, TR (b. 1961) |
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| engin sayan Turkish association football player, TR (b. 1974) |
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| sayan namwong Thai sprinter, TH (b. 1975) |
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| başak sayan Turkish actor, TR (b. 1977) |
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| sayan chakraborty researcher (ORCID 0000-0002-5591-8164) |
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| sayan chakrabarti researcher |
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| sayan paul researcher |
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| sayan ranu Ph.D. University of California, Santa Barbara 2012 |
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| sayan chakraborty Ph.D. Michigan State University 2016 |
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