| Seong of Balhae | |
| Hangul | 성왕 | 
|---|---|
| Hanja | 成王 | 
| Revised Romanization | Seong wang | 
| McCune–Reischauer | Sŏng wang | 
| Birth name | |
| Hangul | 대화여 | 
| Hanja | 大華璵 | 
| Revised Romanization | Dae Hwa-yeo | 
| McCune–Reischauer | Tae Hwayŏ | 
| Monarchs of Korea Balhae | 
|---|
| 
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Seong of Balhae, (died 794), sometimes called by his birth-name Dae Hwa-yeo, was the 5th ruler of the Balhae. He was the grandson of King Mun, his father being the deceased heir Dae Goeng-rim.
He chose the era name Jungheung (중흥, 中興). King Seong was a very physically weak person, and lived for a few months after his rise to the throne. The most notable accomplishment that was done during his reign was the moving of the capital to Sanggyeong.