Lazar Tomov

Lazar Tomov

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Tel: + 359 888 21 61 35
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Lazar Tomov is the founding partner of Tomov&Tomov and the head of its arbitration and litigation practice.


As a counsel, Lazar Tomov represents states and private clients in domestic and international arbitration proceedings. He has experience with arbitrations conducted under the arbitration rules of the International Centre for Settlement of Investment Disputes (ICSID), the International Chamber of Commerce (ICC), the United Nations Commission on International Trade Law (UNCITRAL), and the Bulgarian Chamber of Commerce and Industry (BCCI). His practice covers disputes involving various industries such as energy (oil & gas, photovoltaic, and electricity power generation and distribution), telecommunications, banking, construction, and waste management services.

Significant past and present representations include:

  • Plama Consortium Limited v. Bulgaria (ICSID case no. ARB/03/24);
  • Novera AD et al. v. Bulgaria (ICSID case no. ARB/12/16);
  • ST-AD GmbH v. Bulgaria (PCA case no.2011-06);
  • EVN AG v. Bulgaria (ICSID case no. ARB/13/17);
  • ENERGO-PRO a.s. v. Bulgaria (ICSID case no. ARB/15/19);
  • State General Reserve Fund of the Sultanate of Oman v. Bulgaria (ICSID case no. ARB/15/43);
  • ČEZ, a.s. v Bulgaria (ICSID case no. ARB/16/24);
  • ACF Renewable Energy Limited v. Bulgaria (ICSID case no. ARB/18/1);
  • Moti Ramot and Rami Levy v. Bulgaria (ICSID case no. ARB/18/47);
  • representation of a state in an investment dispute under the UNCITRAL rules related to an airport;
  • representation in an ICC commercial arbitration related to an additional success payment under a share sell and purchase agreement;
  • representation in an ICC arbitration related to a breach of contracts for sale of industry equipment;
  • representation of a company in a commercial arbitration under the UNCITRAL rules related to a power purchase agreement.

As a counsel, Mr. Tomov acts also in proceedings for setting aside arbitral awards, proceedings for recognition and enforcement of foreign arbitration awards and foreign judgments, as well as proceedings before administrative and judicial bodies of the European Union.

Significant successful representations include representing a Croatian company in proceedings for recognition and enforcement of an arbitration award, representing a state in set-aside proceedings related to an arbitration award, representing clients in two competition law proceedings before the European Commission.

Mr. Tomov is a listed arbitrator in the Arbitration Court of the Bulgarian Chamber of Commerce and Industry. He has been appointed as a co-arbitrator and a presiding arbitrator in more than 100 cases related to diverse matters such as mergers & acquisitions, share sell and purchase agreement, banking transactions, and construction.

He is also a listed arbitrator in the International Centre for Settlement of Investment Disputes, and a member of the Permanent Court of Arbitration in the Hague, Netherlands. Recently, he has been appointed as arbitrator in ICSID Case No. ARB/17/49 – Erste Bank v. Republic of Croatia and in ICSID Case No. ARB/17/34 – Raiffeisen Bank v. Republic of Croatia.

In addition to his dispute resolution practice, Mr. Tomov acts as a counsel in high value international transactions and provides advice on matters of public international law. In this capacity, he has advised Bulgaria in regard to two sovereign bond issues and an international petrol pipeline project. He regularly advises Bulgaria and private companies on issues such as state immunity, treaty interpretation and termination, and structuring foreign investments.


Lazar Tomov has been consistently recognized by prestigious international guides to the legal profession such as Global Arbitration Review, Legal 500, GAR 100, and Who is Who Legal, Arbitration.

GAR 100 reports, in the last five editions, that a client has described him as an “outstanding litigator with good judgment and powerful argumentation”.

Legal 500 has included Mr. Tomov in the list of notable practitioners in the field of dispute resolution for the last ten years and in the last two years, he is also a member of the Hall of Fame in Bulgaria. Legal 500 praised Mr. Tomov:

  • in 2013 as a “brilliant lawyer with a sophisticated, rigorous and deeply knowledgeable approach”;
  • in 2014 as “a class act”;
  • in 2015 as “a brilliant lawyer with superb strategic instincts”;
  • in 2016 as having “invaluable judgment” and being “an excellent advocate”;
  • in 2017 as “a leading arbitrator”;
  • in 2018 for his “strategic judgment and persuasive legal arguments”;
  • in 2019 for his “broad legal knowledge, infallible strategic judgment and powerful advocacy” which “have been decisive factors in winning many cases”;
  • in 2020 for his “excellent strategic judgment and powerful advocacy”;
  • in 2021 as an “experienced international litigator and arbitrator” who “has been decisive for winning many cases”;
  • in 2022 for his “deep knowledge”, “powerful and convincing advocacy”, and his capabilities “to make the right strategic decisions for the case”.

Who is Who Legal, in the last nine editions, has recognized Mr. Tomov as a Recommended Practitioner and Global Leader in the field of international arbitration.


Mr. Tomov has graduated from the Faculty of Law of the St. Clement of Ohrid University, Sofia, with a diploma in law with distinction. He received a LLM degree in International Business Law (magna cum laude) from the Faculty of Law of the Katholike Universiteit, Leuven, Belgium. He also studied International and Comparative Law at the Academy of American and International Law, Dallas, USA, and European Union Law at the Academy of European Law, Florence, Italy, and International Arbitration, and Financial Law at Queen Mary and Westfield College, University of London, United Kingdom.


Lazar Tomov is admitted to the Bulgarian Bar Association. He is also a member of:

  • The London Court of International Arbitration
  • The American Society of International Law
  • The European Society of International Law
  • The International Council of Commercial Arbitration
  • The European Law Institute, Vienna
  • The European Association of Private International Law


Lazar Tomov speaks Bulgarian (native) and English (fluent).

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