Duncan Gordon Blair (23 December 1919 – 14 June 2006) was a Canadian lawyer, politician, judge and a Liberal party member of the House of Commons of Canada. He was born in Regina, Saskatchewan. Blair was educated in Regina before receiving a bachelor of arts degree in 1939 and a bachelor of law degree in 1941 from the University of Saskatchewan. He was called to the Bar of Saskatchewan in 1942 and Bar of Ontario in 1952. A 1941 Rhodes Scholar, he attended Exeter College where he studied law and received a bachelor of civil law in 1947. During World War II, he served as a lieutenant with the Irish Regiment of Canada and was wounded in Italy in 1944.