Michael O'Reilly
Michael O'Reilly is the name of the following people:
- Michael O'Reilly (Bishop, † 1758) († 1758), Irish clergyman, Archbishop of Armagh
- Michael O'Reilly (Bishop, 1894) (1894–1973), Newfoundland clergyman, Bishop of St. George’s
- Michael O'Reilly (athlete) (born 1958), British long-distance runner
- Michael O'Reilly (boxer) (born 1993), Irish boxer