Leslie Green was born in Scotland and studied at Queen's University, Canada and at Nuffield College, Oxford. He began teaching at Lincoln College, Oxford before moving to Osgoode Hall Law School. He later returned to Oxford as Professor of the Philosophy of Law and Fellow of Balliol College, and to Queen's as Professor of Law and Distinguished University Fellow. He has been a Visiting Professor at Berkeley, Chicago, NYU and Texas - Austin, and delivered named lectures around the world, including the Leon Green Lecture, The Julius Stone Address, the Kadish Lecture, the 'Or 'Emet Lecture, and the Dewey Lecture.