McGettigan is an Irish surname found in County Donegal, Republic of Ireland and County Londonderry, Northern Ireland. They were a sept of the Clan Diarmaid of the Cenél nEógain branch of the Northern Uí Néill. Notable people with the surname include:
Charlie McGettigan (born 1950), Irish singer, winner of Eurovision Song Contest 1994 Daniel McGettigan (1815–1887), Irish Catholic prelate Eoghan McGettigan, Irish Gaelic footballer Ian McGettigan, Canadian rock musician Larry McGettigan (1952–1994), English footballer Leslie McGettigan, Irish Gaelic footballer and brother of Paul Paul McGettigan (born 1950s), Irish Gaelic footballer and brother of Leslie Roisin McGettigan (born 1980), Irish long-distance runner