John O'Sullivan may refer to:
Sports
- John O'Sullivan (cricketer) (1918–1991), New Zealand cricketer
- John O'Sullivan (cyclist) (1933–2023), Australian cyclist
- John O'Sullivan (footballer) (born 1993), Irish footballer for Shelbourne
- John O'Sullivan (rugby league) (1950–2018), New Zealand rugby league footballer
- John O'Sullivan (rugby union) (born 1980), Irish rugby union footballer
- John Lack O'Sullivan (1976–2002), Gaelic footballer and Australian rules footballer
Politics and government
- John O'Sullivan (Cork politician) (1901–1990), Irish Fine Gael Party politician, Senator, later TD for Cork South-West
- John O'Sullivan (Illinois politician), member of the Illinois House of Representatives
- John C. O'Sullivan (1841–?), politician in Ontario, Canada
- John M. O'Sullivan (1881–1948), Irish Cumann na nGaedhael/Fine Gael politician, TD, cabinet minister and academic
Other
- John O'Sullivan (columnist) (born 1942), British conservative columnist and editor
- John O'Sullivan (engineer), Australian astronomer and electrical engineer, and one of the inventors of Wi-Fi
- Sir John O'Sullivan (soldier) (1700–1760), Irish soldier, Quartermaster general to Prince Charles Edward Stewart during the Jacobite Rising of 1745
- John Francis O'Sullivan (1850–1907), Irish-American awarded the Medal of Honor during the Indian Wars
- John L. O'Sullivan (1813–1895), journalist who popularized the phrase "Manifest Destiny"
See also
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: