John Joseph Connolly PC OBE QC (October 31, 1906 – July 25, 1982) was a Canadian parliamentarian.
During World War II, he was the executive assistant to Angus Lewis Macdonald, Minister of National Defence for Naval Services.
In 1944, he played a pivotal role in the dismissal of Vice-Admiral Percy W. Nelles, the highest-ranking officer in the Royal Canadian Navy.
A law professor, Connolly was appointed to the Senate of Canada as a Liberal by Prime Minister Louis St. Laurent on June 12, 1953.
In 1964, he was appointed to the Cabinet by Lester Pearson becoming Leader of the Government in the Canadian Senate and Minister without portfolio.