In the entire world, Yoon-Sik (윤식 
, Yoon-Sik ) is quite a rare boy's first name. The first name Yoon-Sik is characteristic of Eastern Asia, particularly South Korea, where it is quite a rare boy's name. Parts of the name also exists independently as a first name Yoon, and a last name Sik.
| VARIANT | COUNTRY |
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| 윤식, Yoon-Sik | South Korea |
| yoon-sik kim researcher (ORCID 0000-0001-6989-9569) |
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| yoon-sik oh phycologist |
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| jung yoon-sik Japanese association football player |
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| yoon-sik lee researcher (ORCID 0000-0002-9637-7528) |
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| yoo yoon-sik volleyball player, KR (b. 1989) |
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