Goryeo civil official; Munha sirang and Pyeongjangsa (eldest son of Mun Ik)
| Life | 1137 |
| Era | 고려 (인종 대) |
| Clan | 남평 문씨 |
Mun Gong-in (文公仁, ?-1137) was a Goryeo civil official of the Nampyeong clan, posthumously named Chungui (忠懿). His earlier name was Mun Gong-mi, and he was the eldest son of mid-founder Mun Ik and son-in-law of the chief minister Choe Sa-chu. He served as deputy of the Privy Council and minister of rites and of personnel, and rose to Munha sirang and dongjungseomunha pyeongjangsa.
He travelled as envoy to the Liao and Song courts, was exiled to Chungju after falling out of favor with Yi Ja-gyeom, and returned after Yi's fall. He recommended Myo-cheong and backed the move of the capital to Seogyeong, but over his handling of events during Myo-cheong's rebellion he was impeached by the censors and demoted to Sutaewi and head of the National Academy.
His younger brothers include Mun Gong-won and Mun Gong-yu.