Jack Hennessy may refer to:
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John Francis Hennessy (1853–1924), Australian architect
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John Francis (Jack) Hennessy (1887–1955), his son, Australian architect
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John M. Hennessy, American financier and philanthropist
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Jack Hennessy (politician)
John "Jack" Hennessy (born July 5, 1951) is an American Democratic Party politician who has served as a member of the Connecticut House of Representatives from the 127th district, which encompasses part of Bridgeport,. He started serving in 2 ...
, member of the Connecticut House of Representatives
See also
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Jackie Hennessy
Jackie Hennessy was an Irish footballer who played with St. Patrick's Athletic, Shelbourne and Derry City during his career. He also earned 5 international call-ups to the Republic of Ireland team, debuting during the 1965-66 League of Irela ...
, Irish footballer
{{hndis, Hennessy, Jack