| Munseong 문성 文聖 | |
| Succession: | King of Silla |
| Reign: | 839–857 |
| Predecessor: | Sinmu of Silla |
| Successor: | Heonan of Silla |
| Father: | Sinmu of Silla |
| Mother: | Lady Jeonggye |
| Issue: | Heonan of Silla (adopted) |
| Birth Date: | ??? |
| Death Date: | 857 |
| Death Place: | Silla |
| House: | House of Kim |
| Hangul: | 문성왕 |
| Hanja: | 文聖王 |
| Rr: | Munseong wang |
| Mr: | Munsŏng wang |
| Hangulborn: | 김경응 |
| Hanjaborn: | 金慶膺 |
| Rrborn: | Gim Gyeongeung |
| Mrborn: | Kim Kyŏngŭng |
Munseong (died 857), personal name Kim Kyŏng-ŭng, was the 46th ruler of the Korean kingdom of Silla. He was the eldest son of King Sinmu and Lady Jeonggye.
Munseong's reign was typical of late Unified Silla, with rampant strife and uprisings. Examples include the 841 rebellion of Hong Pil, the 846 rebellion of Jang Bogo (after he failed to marry his daughter into the royal line), as well as the treason of Kim Sik in 849.[1]
The earlier part of his reign was marked by relatively active trade and commerce with both Japan and Tang China. This was due to Jang Bogo's role in securing the major shipping routes.
Upon his death in 857, King Munseong was buried in the Gongjakji tomb precinct in Gyeongju. He was succeeded by his uncle Heonan.
Parents
Consorts and their respective issue: