Mangan is an Irish surname anglicised from the Gaelic Ó Mongáin, meaning "descendant of Mongán". It was originally a byname for someone with a luxuriant head of hair (from mongach. meaning "hair" or "mane").
People Notable people with the surname include:
Alan Mangan, Irish Gaelic footballer Albert Mangan (1915–1993), American Olympic racewalker Andrew Mangan (writer), creator of Arsenal blog, Arseblog Andy Mangan (born 1986), English footballer Colm Mangan, Irish General Cyrille Mangan (born 1976), Cameroonian footballer Dan Mangan (born 1983), Canadian musician Fiona Mangan (born 1996), Irish road-cyclist Gene Mangan (1936–2025), Irish cyclist Jim Mangan (1929–2007), American baseball player Jack Mangan (1927–2013), Irish Gaelic footballer James Clarence Mangan (1803–1849), Irish poet James T. Mangan (1896–1970), author and eccentric Joseph Mangan, American aerospace engineer Josh Mangan (born 1986), Australian cricketer Kate Mangan (1904–1977), British artist, actress and journalist. Lou Mangan (1922–2015), Australian rules footballer Lucy Mangan, British journalist Luke Mangan (born 1970), Australian chef Mike Mangan (rugby union) (born 1975), American rugby union lock Mike Mangan (musician), American keyboard player Sherry Mangan (1904–1961), American writer, journalist, translator, editor, and book designer Simon Mangan (died 1906), Lord Lieutenant of Meath (1894–1906) Stephen Mangan (born 1968), English actor Tom Mangan (1926-1998), American politician and educator Tony Mangan (runner) (born 1957), Irish ultra distance runner Tricia Mangan (born 1997), American Olympic alpine skier
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