Jack Diamond may refer to:
Jack Diamond (architect) (1932–2022), Canadian architect Jack Diamond (Canadian businessman) (1909–2001), Canadian businessman and philanthropist Jack Diamond, better known as Legs Diamond (1897–1931), Irish-American gangster in Philadelphia and New York City during the Prohibition era Jack Diamond (radio personality) (born 1954), American radio personality Jack Diamond (comedian) (1941–2016), British comedy entertainer Jack Diamond, Baron Diamond (1907–2004), British politician and peer Jack Diamond (footballer, born 1910) (1910–1961), English footballer Jack Diamond (footballer, born 2000), English footballer
See also Diamond Jack (disambiguation) Jack of Diamonds (disambiguation) John Diamond (disambiguation)