Michael O'Halloran may refer to:
Politicians Mick O'Halloran (1893–1960), Australian Labor Party (ALP) politician Michael O'Halloran (British politician) (1933–1999), British Member of Parliament for Islington North, London, 1969–1983 Michael O'Halloran (Irish politician) (1936–2023), trade unionist and Lord Mayor of Dublin 1984–1985
Sportspeople Michael O'Halloran (Clare hurler) (born 1971), Irish hurler Michael O'Halloran (Cork hurler) (born 1997), Irish hurler Michael O'Halloran (footballer) (born 1991), Scottish footballer (Bolton Wanderers, St Johnstone, Rangers)
Fiction Michael O'Halloran (novel), a novel by Gene Stratton-Porter Michael O'Halloran (1923 film), a 1923 American silent drama film, based the novel Michael O'Halloran (1937 film), a 1937 American drama film, based the novel Michael O'Halloran (1948 film), a 1948 American drama film, based the novel