Joshua Castellino is Professor of International & Comparative Law and Executive Dean of the College of Arts, Law & Social Sciences at Brunel University of London, United Kingdom. He served as Executive Director of Minority Rights Group (2018-2025) before which he founded the Law School at Middlesex University (London) and helped establish the Irish Centre for Human Rights (Galway).
Joshua’s scholarship and practice combines research in international and comparative law with design and implementation of advocacy strategies, strengthening local, national and regional institutions through engagement with multilateral organizations. He holds honorary/advisory roles at several organisations including Privacy International (UK), the Right Livelihood Foundation (Sweden) and The European Centre for Constitutional & Human Rights (Germany) among others. He also holds honorary /visiting positions at Oxford University (UK), the College of Europe (Poland) & Macquarie University (Australia).
Born and brought up in Mumbai, India, Joshua worked as a journalist for Indian Express Group in the 1990s, winning a Chevening Scholarship and completing his PhD in International Law. He has authored ten books including the Minority Rights Series (Oxford University Press) among over two hundred outputs on international law over thirty years in academia and practice. His latest book is International Law & the Reconceptualization of Territorial Boundaries: In Pursuit of Perpetual Peace (Routledge, 2025).