The Honourable Justice Duncan James Colquhoun Kerr (born 26 February 1952) is a Judge of the Federal Court of Australia and President of the Administrative Appeals Tribunal.Kerr was previously a politician, as the Labor member for Denison in the Australian House of Representatives, serving between 1987 and 2010. He was Minister for Justice between 1993 and 1996, and in 1993 briefly also Attorney-General of Australia.