John O'Reilly or Jack O'Reilly may refer to:
- John O'Reilly (baseball) (born 1995), American baseball player
- John O'Reilly (soldier) (born 1908), Irish soldier
- John O'Reilly (politician) (born 1951), Canadian politician
- John O'Reilly (composer) (born 1940), composer and music theorist
- John O'Reilly (cricketer) (born 1930), Australian cricketer
- John B. O'Reilly Jr. (born 1948), mayor of Dearborn, Michigan
- John Boyle O'Reilly (1844–1890), poet and novelist
- John Francis O'Reilly (1888–1942), Australian politician
- John Joseph O'Reilly (1888–1933), Australian politician
- John O'Reilly (engineer) (born 1946), vice-chancellor of Cranfield University
- John Joe O'Reilly (politician) (1881–1967), Irish politician
- John Joe O'Reilly (Gaelic footballer) (1919–1952)
- Jack O'Reilly (1914–?), footballer
- Jack O'Reilly (Gaelic footballer) (1896–1942), Irish Gaelic footballer
- Jack O'Reilly (runner) (born 1901), Canadian marathoner, runner-up at the 1930 USA Outdoor Track and Field Championships
See also
- John O'Reily (1846–1915), Australian bishop
- John Reilly (disambiguation)
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: