Mahaffey is a surname of Scottish origin, and is an Anglicisation of the Gaelic name Mac Dhuibhshithe. It is a sept of Clan Macfie in Scotland, but the clan originated in Ireland. There the name is found largely in County Donegal, Ulster. People with the surname Mahaffey include: Art Mahaffey (born 1938), American athlete Audley F. Mahaffey (1899–1982), American politician Fred K. Mahaffey (1934–1986), American military officer Jim Mahaffey (1936–2020), American bridge player John Mahaffey (born 1948), American golfer Maryann Mahaffey (1925–2006), American politician Matt Mahaffey (born 1973), American musician Mike Mahaffey (1967–2005), American musician Randolph Mahaffey (born 1945), American basketball player Roy Mahaffey (1904–1969), American baseball player Valerie Mahaffey (born 1953), Indonesian-American actress See also Mahaffy, a variant of the surname References