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Dimitrios Katsikis


Dimitrios represents companies, State-owned entities and governments in international commercial and investment treaty arbitrations, as well as in pre- and post-arbitration negotiations, strategy, and claims management.
Dimitrios represents clients in the power, oil & gas, construction and mining industries, as well as in disputes relating to mergers & acquisitions. He has worked in arbitrations under major arbitration rules such as ICC, ICSID, LCIA, LMAA, SIAC, UNCITRAL, and CRCICA as well as on arbitration-related litigation before the English, French, Swiss, Dutch Indonesian and Pakistan courts. Alongside his work as counsel, Dimitrios has experience sitting as arbitrator. Dimitrios is an ICC YAAF Representative for South Asia, as well as a member of the Advisory Board of the Young Arbitration Group of CIICA, Pakistan’s first international arbitration organization.


Representative matters

An international joint venture, Respondent in an ICC arbitration in Paris brought by a European contractor in relation to the construction of a gas processing facility in Africa. Algerian law applies.

An international joint venture, Claimant in an ICC arbitration against a Middle Eastern State-owned company arising from a contract for the design & build of a landmark infrastructure project in the Middle East.

A South Asian company in its dispute with its partner concerning the development and management of a retail real estate business in South Asia. Singapore law and the law of the South Asian State apply.

The subsidiary of an Asian State-owned company in the energy sector, Respondent in two parallel ICC arbitrations in Singapore initiated by its Asian co-shareholder and its parent company. The dispute arose from two agreements relating to the development of an oil storage facility and related port facilities in Asia. English law and the law of the Claimants’ State applied.

Published Work

  • Katsikis, Dimitrios, (2021) “‘Necessity’ due to COVID-19 as a Defence in International Investment Claims”, Oxford: ICSID Review
  • Katsikis, Dimitrios, (2021) “Breach of the Agreement to Arbitrate due to Third Party Conduct”, Oxford: Arbitration International
  • Katsikis, Dimitrios (with A. Nicholls), (2020) “Enforcement in Indonesia: Obtaining a Power of Attorney for Registration of the Award”, 37(5) The Netherlands: Journal of International Arbitration 665
  • Katsikis, Dimitrios (ed. K. Yannaca-Small), (2018) “The Meaning of Investment in Investment Treaty Arbitration”, Oxford: Arbitration under International Investment Agreements: A Guide to the Key Issues 266, 2nd ed.

Speaking Engagements

  • Panelist, “Construction disputes in Southeast Europe: How to avoid and resolve them”, ICC YAAF, Greece (Athens), October 2023
  • Panelist, “Recent Trends in Investor-State Dispute Settlement: Examining Qualitative and Quantitative Data from 2020 to 2023”, Singapore International Dispute Resolution Academy (“SIDRA”), Singapore, September 2023
  • Speaker, “Public-Private Partnerships: Concession Agreements”, US Department of Commerce, The Philippines (Manila), December 2023
  • Panelist, “X-Factor: Choosing the Right Forum for Indonesian Business Disputes”, ICC YAAF, Indonesia (Jakarta), June 2022

Leadership Positions And Professional Affiliations

  • Regional Representative, ICC Young Arbitrators and ADR Forum, South Asia Chapter
  • Member, International Advisory Board of the Pakistan Center for International Investment and Commercial Arbitration (CIICA) Young Arbitration Group (YAG)
  • Member, SIAC Reserve Panel of Arbitrators
  • Member, HKIAC List of Arbitrators



Attorney-at-Law, New York, 2014

Solicitor, England & Wales, 2016

Recognized as an EC lawyer, Athens, Greece, 2020 


L.L. B., Bachelor of Laws, Law with Advanced Studies, University of London, 2009

Legal Practice Course (UK), Debt/Equity Finance, Private Acquisitions, Litigation, BPP Holborn, 2010

Bachelor of Civil Law, Public and Private International Law Oxford University, 2011


Greek, English, French
A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.