Martin O'Connell may refer to:
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Martin O'Connell (Gaelic footballer) (born 1963), Irish Gaelic footballer
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Martin O'Connell (politician) (1916–2003), Canadian politician
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Martin O'Connell (racing driver),
British Formula Three National Class champion 1997 and 1999
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Joe O'Connell (Irish republican) (Martin Joseph O'Connell, born 1951)
{{hndis, Oconnell, Martin