Partner, Attorney-at-Law



One of the founders of Vasil Kisil & Partners.

Has been practicing law since 1992.

Expert in complex international arbitration and energy matters.

Represents clients before arbitral tribunals both in Ukraine and abroad and conducts arbitrations under the auspices of the SCC, ICC, LCIA, and UNCITRAL.

Represented governmental authorities as well as various multinational and domestic clients in the projects of construction and operation of transport and energy facilities, production sharing agreements, EPC turn-key contracts, and O&M agreements.

A Ukrainian representative in the International Chamber of Commerce (ICC) on arbitration and alternative dispute resolution.


  • Chambers Global and Chambers Europe 2013 – 2014, 2019 – 2023 Oleg endorse Oleg Alyoshin in dispute resolution as a “skillful litigator and arbitrator”.

  • Chambers Europe 2012 – 2018 recommends Oleg Alyoshin as one of the top real estate lawyers in Ukraine.

  • Legal 500 2015, 2018 – 2022 recognises Oleg Alyoshin in dispute resolution.

  • Legal 500 2012 – 2016 lists Mr. Alyoshin among the leading practitioners in Real Estate & Construction and names him “vastly experienced and effective”.

  • Arbitration Powerlist: CIS and Caucasus 2021 has listed Oleg Alyoshin as a leading arbitration practitioner.

  • Since 2009, Mr. Alyoshin has been named by the Best Lawyers as a leading practitioner in arbitration and mediation, construction, energy and natural resources, real estate, litigation and trade in Ukraine.

  • Benchmark Litigation Europe 2020 – 2022 recognises Oleg Alyoshin in the field of litigation (Rating "Litigation Star").

  • Who's Who Legal: Commercial Litigation 2022 names Mr. Alyoshin as one of the top commercial litigators in Ukraine.

  • Top 100 best lawyers of Ukraine. Client's Choice 2020-2022 by the Yurydychna Gazeta listed Oleg as a leading practitioner in the field of International Arbitration.


Energy and Natural Resources,
International Arbitration


Alpine skiing

selected projects


Ukrainian Service for Construction of Motorways (Ukrautodor)

European Bank for Reconstruction and Development




Oleg Alyoshin and Tetyana Revutska acted as local experts for the annual Energy Investment Risk Assessment report...

Oleg Alyoshin


As is characteristic for civil law jurisdictions, Ukrainian law consists of the legislative acts enacted by the Parliament of Ukraine and international treaties, which upon their ratification become part of the national legislation. According to the Constitution of Ukraine, in the case of a conflict between treaty provisions and national law, the international treaty provisions prevail. Conflict with the Constitution itself is the only exception as the Constitution is of the highest legal authority and always takes precedence over other provisions...

Oleg Alyoshin


Q&A about Attribution of Acts or Omissions to the State

Ivan Yavnych , Oleg Alyoshin