John O'Hara (disambiguation)
John O'Hara is the name of the following people:
- John O'Hara (1905-1970), American writer
- John O'Hara (Bishop) (* 1946), American clergyman, auxiliary bishop in New York
- John O'Hara (wrestler) (1913-1983), Australian wrestler
- John O'Hara, keyboardist for the band Jethro Tull
- John Francis O'Hara (1888–1960), American clergyman, Archbishop of Philadelphia
