Jack Dennett (May 30, 1916 – August 27, 1975) was a Canadian radio and television announcer. He began his career in radio at the age of sixteen at CFAC in Calgary, beginning with various odd jobs such as filing, then began filling in for the regular news announcer when he did not appear for work. In 1935, Dennett began conducting hockey interviews of players in the Regina Senior Hockey League. He enlisted in the Canadian Forces in 1940 although was soon discharged due to suffering from stomach ulcers. He died at the age of 59 in Scarborough General Hospital on August 27, 1975.