Ŭl P'aso (Korean: 을파소; Hanja: 乙巴素; died 203) was the Guksang (Prime Minister) of Goguryeo under its 9th ruler King Gogukcheon.
Ŭl P'aso was a native of Chwa-mul village (좌물촌; 左勿村) near the West Amnok River Valley.
During the twelfth year of reign of King Gogukcheon (190), powerful aristocrats from the tribe of Yŏnna (연나부; 椽那部), who were relatives of the queen, seized land from the commoners.
King Gogukcheon's sudden shift from an aristocratic to meritocratic style of government resulted in the discovering of many talented people throughout the kingdom.
The king threatened them with extermination if they continued to disobey, and since he had begun his reforms by executing or banishing the followers of his maternal relatives for encroaching on royal power, they believed him and quieted down.