Samuel Austin Moffett (1864–1939, Korean: 마포삼열, Hanja: 馬布三悅) was one of the early American Presbyterian missionaries to Korea.
He studied at Hanover College, Indiana, and in 1888 at McCormick Theological Seminary in Chicago.
He moved to Pyongyang to focus on the ministry in the northern part of Korean peninsula.
Prior to the split, Moffett served as the president for 17 years and as a member of its faculty until 1935.
He served for 46 years before being forced out by the Japanese occupiers who considered him as a harmful influence against their colonization policy.