Yŏn Namgŏn
| Yŏn Namgŏn | |
| Hangul | 연남건 |
|---|---|
| Hanja | 淵男建 |
| RR | Yeon Namgeon |
| MR | Yŏn Namgŏn |
Yŏn Namgŏn (淵男建, 연남건) (635 ~ ?) was the second son of the Goguryeo military leader and dictator Yŏn Kaesomun (Unknown-666), and third Tae Mangniji of Goguryeo during the reign of Goguryeo's last ruler, King Bojang.