Eoin O'Mahony

Eoin O'Mahony may refer to:
 * Eoin O'Mahony (politician) (1904–1970), Irish barrister, activist, genealogist, and raconteur
 * Eoin O'Mahony (Gaelic football) (born 1962), member of the 1989 Cork All-Ireland senior football champion squad
 * List of people with locked-in syndrome