George McAfee "Mac" McCune (June 16, 1908 – November 5, 1948) was co-developer, with Edwin O. Reischauer, of the McCune-Reischauer romanization of Korean. He was born in P'yŏngyang as the son of an American educational missionary, George Shannon McCune and received his elementary education in Korea. He then attended Huron College in South Dakota and transferred to Rutgers University after one year. He graduated from Occidental College with a Bachelor degree in 1930.
His brother, Shannon Boyd-Bailey McCune (1913-1993), was a geographer who authored several books on Korea for the general public.