Around the world, Yoonjoo (Yoonjoo 
) is a very rare dominantly female, but uncommonly boy's first name. The first name Yoonjoo is habitual in Northern America, particularly the United States, where it is an extremely rare epicene name. Likewise, Yoonjoo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Yoonjoo | China, South Korea, Australia, United States, Canada |
| yoonjoo choi researcher ORCID ID = 0000-0001-9687-8093 |
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| yoonjoo kim researcher (ORCID 0000-0002-7414-6331) |
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| yoonjoo jo researcher (ORCID 0000-0002-0788-238X) |
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