John or Jack Condon may refer to:
John Condon (boxer) (1889–1919), British bantamweight professional boxer John Condon (British Army soldier) (1897–1915), 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 (1860–1945), American college football coach and school principal John F.X. Condon (1914–1989), American public address announcer John Condon (hurler) (1872–1944), Irish hurler John P. Condon (1911–1996), aviator in the United States Marine Corps John Peter Condon (1920–2011), diplomat and US Ambassador to Fiji, Tonga, and Tuvalu Jack Condon (1909–1967), South African tennis player Jack Condon (footballer) (1922–2015), Australian rules footballer