John O'Donnell may refer to:
Sportsmen John O'Donnell (baseball), 19th-century Major League Baseball player John O'Donnell (boxer) (born 1985), Irish boxer John O'Donnell (Australian footballer) (born 1947), Australian footballer for St Kilda John O'Donnell (rugby union, born 1902) (c. 1902–c. 1990), rugby union player who represented Australia John O'Donnell (Gaelic footballer) (1910–1954), 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) (1827–1899), New York assemblyman, state senator, railroad commissioner John O'Donnell (merchant) (1749–1805), Irish-born merchant based in Baltimore, a statue of whom was removed in 2021 John O'Donnell (music journalist) (born 1962), Australian music journalist and record producer John O'Donnell (poet), Irish-Australian soldier and poet John O'Donnell (political journalist) (1896–1961), American political journalist John O'Donnell (Irish politician, born 1866) (1866–1920), 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) (born 1947), Sydney radio personality John F. O'Donnell (died 1993), Irish-born American labor lawyer John H. O'Donnell, member of the California legislature John J. O'Donnell (1925–2022), American labor union leader John Harrison O'Donnell (1838–1912), physician and political figure in Manitoba John Francis O'Donnell, Irish journalist and poet
See also Jack O'Donnell (disambiguation)