Surname Sung-Yeon (성연 
, Sung-Yeon 
) , around the world, is an extremely rare cognomen. Predominantly, Sung-Yeon is the forename as well as the last name. Parts of the name also exists independently as a last name Sung, and a last name Yeon.
| VARIANT | COUNTRY |
|---|---|
| 성연 | South Korea |
| Sung-Yeon | United States |
Seong-Yeon, Seongyeon, Sung-Yun, ソンヨン, and 胜妍
| sung-yeon yoon researcher |
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| sung-yeon park health and media scholar |
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| sung-yeon jang researcher ORCID ID = 0000-0002-4225-3167 |
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| sung-yeon cho physician ORCID ID = 0000-0001-5392-3405 |
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