Professor Loukas Mistelis is a partner in Steptoe’s London office focusing on international commercial arbitration, investor-state disputes, and public international law. He is also the Clive Schmitthoff Professor of Transnational Commercial Law and Arbitration at the Centre for Commercial Law Studies, Queen Mary University of London.

Prof. Mistelis represents corporations, financial institutions, sovereign states, and state-owned entities as counsel and expert in complex cross-border disputes, and he regularly sits as an arbitrator in proceedings administered by the world’s leading arbitral institutions.

Prof. Mistelis is known for handling high-value disputes involving energy, natural resources, construction and infrastructure, aviation, banking and finance, privatisation, defense contracts, and other strategic commercial arrangements. His experience spans ad hoc arbitrations and proceedings under the ICC, ICSID, LCIA, PCA, UNCITRAL, SCC, Swiss Chambers, VIAC, DIAC, and other institutions’ rules, as well as emergency arbitrator proceedings. He has advised and appeared in matters involving parties from Europe, the Middle East, Africa, Asia, and the Americas.

Combining extensive disputes experience with academic insight, Prof. Mistelis advises clients on highly technical and sensitive matters. His work includes representing multinational companies in disputes arising from major engineering and construction projects, acting for sovereign and state-linked parties in investment and concession disputes, and serving as an expert on arbitration, treaty, and international commercial law issues.

Prof. Mistelis is widely recognised as a leading figure in international arbitration. He has long been ranked by Chambers and recognised by Lexology Index (formerly Who’s Who Legal), including as a Global Elite Thought Leader in international arbitration, and is also featured in the Legal 500 International Arbitration Powerlist. He has been part of teams recognised by Global Arbitration Review, including the 2022 GAR Award for innovation, and is also a widely published author and frequent speaker on international dispute resolution.