Sir Andrew Rae Duncan, GBE (3 June 1884 – 30 March 1952) was a British businessman who was brought into government during World War II, serving twice as both President of the Board of Trade and Minister of Supply. He was knighted in 1921 and appointed a Knight Grand Cross of the Order of the British Empire (GBE) in 1938. He was also awarded the Italian Order of Saints Maurice and Lazarus. In 1916, he married Anne Jordan. They had two sons, one of whom was killed in action in 1940. He died in his sleep, aged 67.