James Elliott Coyne, (July 17, 1910 – October 12, 2012) was the second Governor of the Bank of Canada, from 1955 to 1961, succeeding Graham Towers.
During his time in office, he had a much-publicized debate with Prime Minister John Diefenbaker, a debate often referred to as the "Coyne Affair" (or sometimes the "Coyne Crisis"), which led to his resignation and, eventually, to greater central-bank independence in Canada.