All over the world, Yoochan (Yoochan 
) is a rare male forename. The first name Yoochan is characteristic of Eastern Asia, particularly South Korea, where it is a rare boy's name. Very seldom, Yoochan is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Yoochan | United States, Thailand, South Korea |
| yoochan hong researcher (ORCID 0000-0001-8780-0905) |
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| yoochan hong researcher ORCID 0000-0002-6345-9877 |
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| yoochan myung researcher |
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