Rumbidzai Maweni

Associate - Washington, D.C.

Rumbi Maweni
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Contact Information

Rumbidzai Maweni is an associate in Foley Hoag’s Washington D.C. office and a member of the International Litigation and Arbitration Department. She focuses her practice on representing sovereign States and State-owned entities in investor-State arbitrations and public international law disputes. Rumbidzai is also a member of the firm’s Global Business & Human Rights practice and advises multinational companies on ways to integrate internationally recognized environmental, social, and human rights principles into their management practices and supply chains.


  • Universiteit van Amsterdam, LL.M., 2014
  • Columbia University School of Law, J.D., 2014
  • Oxford University, M.Phil., 2010
  • University of Durham, B.A., 2008


English, Shona, French

Representative Experience

International Litigation Before the International Court of Justice 

  • Land and Maritime Delimitation and Sovereignty over Islands (Gabon/Equatorial Guinea). Representing Equatorial Guinea in a dispute with Gabon regarding the Parties’ land and maritime boundaries and sovereignty over islands.   

Investor-State Arbitration 

  • Chevron Corp. & Texaco Petroleum Corp. v. Republic of Ecuador. Representing Ecuador in an UNCITRAL Rules arbitration under the Ecuador-United States bilateral investment treaty regarding a $9.5 billion judgment issued by an Ecuadorian court against Chevron for environmental damages in the Ecuadorian Amazon.
  • Niko Exploration (Block 9) Ltd. v. Bangladesh and Bangladesh Oil and Gas Mineral Corp. Representing a Bangladeshi State-owned oil and gas company in a contract-based ICSID arbitration proceeding.
  • Sacyr S.A. v. The Republic of Panama. Representing Panama in an UNCITRAL Rules arbitration under the Spain-Panama bilateral investment treaty regarding the expansion of the Panama canal.
  • Hydro and others v. Albania. Represented Albania in an ICSID annulment proceeding concerning various industries.
  • Niko Resources v. Bangladesh, BAPEX and Petrobangla. Represented Bangladesh, and its state entities, in a dispute before ICSID concerning the causes, impacts, and damages related to two gas blowouts.
  • Representing a State in a PCA arbitration (confidential).
  • Representing a State in a PCA arbitration (confidential).
  • Author, “Global Warming and the ‘Africanisation’ of International Investment Law?”, ICC Guest Blog (2 June 2022)
  • Co-author (with T. Pasipanodya, I. Padeanu, & K. M’ziani), “USA: Investor State Arbitration 2021” in The International Comparative Legal Guide to Investor-State Arbitration 2021, Global Legal Group (ed.), 3rd Edition (2020)
  • Co-author (with K. Cordes, L. Johnson, and S. Szoke-Burke), “Legal Frameworks and Foreign Investment: A Primer on Governments’ Obligations”, Columbia Center on Sustainable Investment (November 2019)
  • Author, “Arbitrating Human Rights Disputes: The Proposal for Business and Human Rights Arbitration Rules and Lessons Learned from the Bangladesh Accord Arbitrations”, CCSI Blog (2 July 2019)


  • American Society of International Law, Member
  • Oxford University Press, Investment Claims: Contributor


  • Panelist, “TRIPS Compliant Compulsory Licenses for the Promotion of Public Health as a Breach of the FET Standard in ISDS Disputes,” Joint ASIL-CCIL North American Conference on International Economic Law, Montreal, QC (September 2018). 
  • Panelist, “Expropriation, Land Rights, and Sustainable Agricultural Investment,” 20th Annual World Bank Land and Poverty Conference, Washington D.C. (March 2019).