Yun Il-seon (Korean: ???; Hanja: ???, October 5, 1896 – June 22, 1987) was a South Korean politician, pathologist, and anatomist.
He was the 6th Chairman of University of Seoul 1956 to 1961, a pathology pupil of Fuzinami Ahkira (???), successor of Rudolf Virchow, and cousin of president Yun Bo-seon.