Spoken languages
English, French
Areas of expertise
  • Boundary and territorial disputes
  • Corporate responsibility
  • Dispute settlement
  • Human rights
  • International courts and tribunals
  • International law (public, private)
Geographical Region of Expertise
  • South America
  • Central America
  • Asia


PhD Cambridge University
Professor Zachary Douglas QC joined the Graduate Institute in autumn 2011 from the University of Cambridge, where he lectured in public international law and international dispute settlement. His research focuses upon areas at the intersection of public and private international law such as investment arbitration, international law in domestic courts and financial crime. He has also published more widely on topics of general international law. In additional to his academic activities, Professor Zachary Douglas QC maintains a practice as counsel, expert witness and arbitrator before international courts and tribunals and is an academic member of Matrix Chambers in London.



  • ‘The MFN Clause in Investment Arbitration: Treaty Interpretation Off the Rails’ (2011) 2 Journal of International Dispute Settlement 97-114.
  • 'State Immunity For The Acts of State Officials' (2011) British Yearbook of International Law
  • ‘The ICSID Regime of State Responsibility’ in J. Crawford, A. Pellet & S. Olleson (eds), The Law of International Responsibility (OUP, 2010) pp. 815-42.
  • The International Law of Investment Claims (CUP, 2009) 616 pp; ‘The Hybrid Foundations of Investment Treaty Arbitration’ (2003) Vol. 74 British Yearbook of International Law pp. 151-289.
  • Part VI ‘Financial Crime and Private International Law’, in Sir W. Blair & R. Brent (eds), Banks and Financial Crime: The International Law of Tainted Money (OUP, 2008), pp. 335-400.



  • Academic Member, Matrix Chambers

Office Hours