John O'Donnell
John O'Donnell may refer to:
Sportsmen
- John O'Donnell (baseball), 19th-century Major League Baseball player
- John O'Donnell (boxer), Irish boxer
- John O'Donnell (Australian footballer), Australian footballer for St Kilda
- John O'Donnell (rugby union, born 1902), rugby union player who represented Australia
- John O'Donnell (Gaelic footballer), Irish Gaelic footballer who represented Donegal and Ulster
- John O'Donnell (rugby, born 1993), Irish rugby player
Other
- John O'Donnell (Lewis County, New York), New York assemblyman, state senator, railroad commissioner
- John O'Donnell (merchant), Irish-born merchant based in Baltimore, a statue of whom was removed in 2021
- John O'Donnell (music journalist), Australian music journalist and record producer
- John O'Donnell (poet), Irish-Australian soldier and poet
- John O'Donnell (political journalist), American political journalist
- John O'Donnell (Irish politician, born 1866), Irish journalist, Nationalist politician and Member of Parliament
- John O'Donnell (Irish politician, born 1980s), member of Donegal City Council
- John O'Donnell (radio personality), Sydney radio personality
- John F. O'Donnell, Irish-born American labor lawyer
- John H. O'Donnell, member of the California legislature
- John J. O'Donnell, American labor union leader
- John Harrison O'Donnell, physician and political figure in Manitoba
- John Francis O'Donnell, Irish journalist and poet