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Global Leader

Arbitration 2020

Professional Biography

WWL Ranking: Recommended

WWL says

Sylvia Tonova receives endorsements as "an accomplished and excellent lawyer" who is "strong in CIS disputes".


Sylvia Tonova is an international arbitration lawyer with 15 years of experience representing investors and states in investment treaty and commercial arbitrations. Recognised for her "incredibly impressive work", her "strong analytical thinking" (Who’s Who Legal) and "great understanding of clients’ needs" (Chambers UK), Sylvia spent seven years with the international arbitration group of an international law firm in Washington, DC before relocating to Jones Day in London and being promoted to partner in 2017.

Sylvia represents clients in arbitrations under all the major arbitration rules, including the ICSID and the ICSID Additional Facility Rules, and was appointed to the ICSID panels of arbitrators and of conciliators in 2016. Her practice focuses on investment and commercial disputes arising in Eastern Europe and the CIS, including the successful representation of Bulgaria and Romania in four ICSID arbitrations. Sylvia was also part of the team that recently secured victories against Kazakhstan on behalf of Canadian mining company World Wide Minerals Ltd and against Uzbekistan on behalf of a Turkish client and a private equity firm.

Sylvia regularly advises clients on enforcement of awards, sovereign immunity issues, arbitration clauses, and protecting investments against political risk in a range of industries, including oil and gas, mining, energy, banking and telecommunications.

Sylvia teaches enforcement of investment and commercial arbitration awards at the University of Roma Tre and is a former co-chair of Young ICCA and a former member of the executive committee of the Institute for Transnational Arbitration (ITA). She obtained her law degree from Georgetown University and is qualified to practice law in New York, the District of Columbia and England and Wales.

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