Maginn is a surname. Notable people with the surname include:

Adrian Maginn (born 1954), Australian former rower and rowing coach Bonnie Maginn (1880–1964), American actor Edward Maginn (1802–1849), Irish Roman Catholic priest, advocate of Catholic Emancipation, supporter of Daniel O'Connell in the Repeal movement Edward Joseph Maginn (1897–1984), Scottish-born American Catholic Bishop for Albany, New York State Francis Maginn (1861–1918), Church of Ireland missionary and one of the co-founders of British Deaf Association Matt Maginn, musician from Omaha, Nebraska Robert Maginn (born 1956), United States businessman, former chairman in the Massachusetts Republican Party Simon Maginn (born 1961), British writer William Maginn (1794–1842), Irish journalist and miscellaneous writer

See also Bishop Maginn High School, a Catholic high school in Albany, New York State Maginn Park, a football stadium located in Buncrana, County Donegal, Ireland

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