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