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Bak Munsu (Korean: 박문수; Hanja: 朴文秀; 1691–1756), also known as Park Mun-su, was a Korean government official in the period of King Yeongjo of Joseon in the Joseon Dynasty. He was famous for his lifetime spent protecting the Korean people from corrupt royal officials.
|Revised Romanization||Bak Mun-su|
Bak passed the state examination in 1723 and later became a secret royal inspector, or amhaengeosa (暗行御史, 암행어사). He is the most famous amhaengeosa in the history of Korea, and has become something of a legendary figure, and there are many legends surrounding his achievements as an amhaengeosa.
Bak was the son of Bak Hang-han, and a member of the Goryeong Park clan. His pen name was Gieun, his courtesy name was Seongbo, and his posthumous name was Chungheon.
Two portraits of Bak Mun-su have been preserved and are in good condition.