Last name Okyay (Okyay 
) , in all the world, is a common cognomen. The last name Okyay is characteristic of Turkey, where it is quite a common surname, Netherlands, where it is a rare surname, and Germany. Much less frequently, Okyay is the forename as well as the last name.
| abdullah okyay Turkish politician, TR (b. 1869) |
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| mehmed necmeddin okyay Turkish calligrapher (1883-1976), TR (b. 1883) |
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| kemal okyay Turkish politician, TR (b. 1924) |
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| turgut okyay Turkish judge, TR (b. 1941) |
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| okyay kaynak researcher, TR (b. 1948) |
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| i̇brahim okyay Turkish racing driver, TR (b. 1969) |
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| i̇skender okyay TR (b. 1963) |
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| okyay küçükkayalar Turkish archer, TR (b. 1978) |
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| tugba onal okyay researcher |
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| mahmut sait okyay researcher |
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| emre okyay researcher |
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| rahşan dilek okyay researcher |
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| dilek okyay researcher |
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| gizem okyay researcher (ORCID 0000-0002-9661-6728) (b. 1985) |
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| kemal okyay Turkish footballer, TR (b. 1985) |
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