Seamie Granaghan is an Irish Gaelic footballer who played for the Donegal county team.
Along with Brian McEniff, he won a joint record eight Donegal Senior Football Championship winners' medals during the 1960s and 1970s.
He was half-forward during Donegal's 1972 and 1974 Ulster Senior Football Championship final victories. He was the only player to score in every game during both 1972 and 1974 runs.
Handball had a role in his development. His daughter married Paul Brennan in October 2023.