John Fitzpatrick or FitzPatrick may refer to:

• John Fitzpatrick (athlete) (1907–1989), Canadian sprinter
• John Fitzpatrick (baseball) (1904–1990), American baseball coach
• John Fitzpatrick (cricketer) (1889–1952), Australian cricketer
• John Fitzpatrick (footballer, born 1946) (1946–2020), Scottish footballer
• John Fitzpatrick (Irish footballer), Irish soccer player during the 1890s
• John Fitzpatrick (racing driver) (born 1943), English racing driver
• J. R. Fitzpatrick (John Ryan Fitzpatrick, born 1988), Canadian racing driver
• John Fitzpatrick (hurler) (1905–1990), Irish hurler
• John FitzPatrick (American football) (born 2000), American football player

• John Fitzpatrick (mayor) (1844–1919), Irish-American mayor of New Orleans
• John FitzPatrick (Australian federal politician) (1915–1997), Australian politician
• John Fitzpatrick (New South Wales politician) (1862–1932), Australian politician and journalist
• John Fitzpatrick (unionist) (1871–1946), Irish-American union leader
• John FitzPatrick, 1st Baron Castletown (1811–1883), Irish politician
• John FitzPatrick, 1st Earl of Upper Ossory (1719–1758), Irish peer and member of Parliament
• John FitzPatrick, 2nd Earl of Upper Ossory (1745–1818), Irish peer and member of Parliament
• John Lalor Fitzpatrick (1875–1956), Irish member of Parliament

• John Bernard Fitzpatrick (1812–1866), American Roman Catholic bishop
• John Clement Fitzpatrick (1876–1940), American archivist and historian
• John F. Fitzpatrick (1887–1960), American publisher
• John Joseph Fitzpatrick (1918–2006), American Roman Catholic bishop
• John Kelly Fitzpatrick (1888–1953), American painter
• John M. Fitzpatrick (1948–2014), Irish urologist
• John W. Fitzpatrick (born 1951), American ornithologist

• Fitzpatrick (surname)
• Fitzpatrick (disambiguation)