Philippe Joseph Sands, KC Hon FBA is a British and French writer and lawyer at 11 King's Bench Walk and Professor of Laws and Director of the Centre on International Courts and Tribunals at University College London. A specialist in international law, he appears as counsel and advocate before many international courts and tribunals, including the International Court of Justice, the International Tribunal for the Law of the Sea, the European Court of Justice, the European Court of Human Rights and the International Criminal Court.

East West Street: On the Origins of Genocide and Crimes Against Humanity is a 2016 book by Philippe Sands that examines the lives of two Jewish lawyers, Hersch Lauterpacht and Raphael Lemkin, born within three years of each other and students in the same city on the eastern outskirts of Europe, Lviv, who created the legal concepts of crimes against humanity and genocide. It is a memoir and history of the origins of international criminal law in the aftermath of the Second World War.