Sylvia Tonova

Partner, Global Dispute

Jones Day


Sylvia Tonova is a Global Disputes partner at Jones Day, focusing on the resolution of complex, high-stakes international disputes, with a particular emphasis on disputes between foreign investors and governments.  Her experience spans Europe and the Middle East, Africa, Latin America and Asia in a range of industries, including mining, oil and gas, and energy.  She has represented clients under all the major arbitration rules and advises clients on arbitration clauses, sovereign immunity, and protecting investments against political risk.  Sylvia acts as both arbitration counsel and arbitrator.  She was appointed to the ICSID Panel of Arbitrators by Bulgaria in 2016.  

Sylvia is recognized in Legal 500, Chambers, Who's Who Legal: Arbitration, and Who’s Who Legal: Mining.  Chambers describes her as “an absolutely brilliant lawyer” “who, on complex matters, has the remarkable ability to combine strategic thinking with a great attention to detail."  Clients “love her business-savvy approach to disputes" (Legal 500) and describe Sylvia as an "outstanding legal counsel” who “always delivers quality for the client" (Legal 500, Chambers) and is “responsive, well balanced, practical and provides ground-breaking solutions" (Who's Who Legal).  She is “a standout figure at Jones Day in London” and “has now established herself as a leader of the younger generation” (Legal 500).

Sylvia serves on the International Bar Association's Arbitration Committee as co-chair of the international commercial arbitration case law subcommittee. She also teaches investment treaty arbitration procedure and enforcement of awards at Roma Tre Law School.

Sylvia Tonova

Hear Me Speak At