John or Jack Condon may refer to:
- John Condon (boxer) (1889–1919), British bantamweight professional boxer
- John Condon (British Army soldier) (1896–1915), previously thought to be the youngest British soldier killed in the First World War
- John F. Condon (Lindbergh kidnapping), hired by Charles Lindbergh in 1932
- John F. Condon (fl. 1883), American college football coach
- John Condon (hurler) (1872–1944), Irish hurler
- John P. Condon (1911–1996), aviator in the United States Marine Corps
- Jack Condon (1903–1967), tennis player from South Africa
- Jack Condon (footballer) (1922–2015), Australian rules footballer
This disambiguation page lists articles about people with the same name.
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