Philippe Joseph Sands (born 17 October 1960) 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 the Faculty of Laws, 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.
Sands has served on the panel of arbitrators at the International Centre for the Settlement of Investment Disputes (ICSID) and the Court of Arbitration for Sport (CAS).
He is the author of seventeen books on international law, including Lawless World (2005) and Torture Team (2008). His book East West Street: On the Origins of Genocide and Crimes against Humanity (2016) has been awarded numerous prizes, including the 2016 Baillie Gifford Prize for Non-Fiction, and has been translated into 24 languages. His latest books are The Ratline: Love, Lies and Justice on the Trail of a Nazi Fugitive (2020) about Otto Wächter, The Last Colony: A Tale of Exile, Justice and Britain's Colonial Legacy (2022) about Chagos and the life of Liseby Elysé and 38 Londres Street: On Pinochet in London and a Nazi in Patagonia (2025).
Sands served as President of English PEN from February 2018 to April 2023 and was a member of the Board of the Hay Festival of Arts and Literature, from 2018 to December 2024.
Sands was born in London on 17 October 1960 to Jewish parents; his mother (née Buchholz) was French. He was educated at University College School in Hampstead, London, and read law at Corpus Christi College, Cambridge, attaining a BA degree in 1982 and going on to achieve first-class honours in the LLM course a year later. After completing his postgraduate studies at Cambridge, Sands spent a year as a visiting scholar at Harvard Law School.
From 1984 to 1988, Sands was a Research Fellow at St Catharine's College, Cambridge, and the Cambridge University Research Centre for International Law (now the Lauterpacht Centre for International Law). He has also held academic positions at King's College London (1988–1993) and SOAS (1993–2001). He was a Global Professor of Law at New York University Law School (1993–2003) and has held visiting positions at Paris I (Sorbonne), University of Melbourne, the Graduate Institute of International and Development Studies, Indiana University Bloomington, University of Toronto, Boston College Law School and Lviv University.
In 2019, he was appointed the Samuel and Judith Pisar Visiting Professor of Law at Harvard Law School.
Sands was the co-founder of the Centre for International Environmental Law (1989) and the Project on International Courts and Tribunals (1997).
Sands was called to the Bar of England and Wales in 1985. In 2000, he was a founding member of Matrix Chambers and was appointed Queen's Counsel (QC) in 2003. Sands was elected a Bencher of Middle Temple in 2009. He joined 11 King's Bench Walk on 1 October 2022.
Sands has acted as counsel and advocate in cases that span a wide range of subject areas, including:
maritime boundary disputes (in the Caribbean, Atlantic and Pacific Oceans);
claims relating to natural resources, pollution and environmental assessment;
issues relating to the immunity of serving and former heads of state from the jurisdiction of national and international courts;
claims under the United Nations Convention on the Law of the Sea;
claims relating to the use of force, allegations of torture, genocide, self-determination and other violations of human rights;
claims relating to violations of international criminal law.
Sands has acted as counsel in more than two dozen cases at the International Court of Justice, including the Nuclear Weapons Advisory Opinion (counsel for the Solomon Islands); the Georgia v. Russia dispute (counsel for Georgia); Whaling in the Antarctic (counsel for Australia); Legal Consequences of the Separation of the Chagos Archipelago from Mauritius in 1965; and Application of the Genocide Convention on the Prevention and Punishment of the Crime of Genocide (counsel for The Gambia). He has also been instructed in inter-State arbitrations, including the Chagos Marine Protected Area Arbitration (counsel for Mauritius) and the dispute between the Philippines and China over maritime jurisdiction in the South China Sea (counsel for the Philippines).
Prior to accepting appointments as ICSID arbitrator (since 2007), Sands acted as counsel in ICSID and other investment cases (including Tradex, Waste Management and Vivendi). Sands now sits as arbitrator in investment disputes and in sports disputes (CAS).