Olena Perepelynska with long brown hair, wearing glasses and a black blazer over a mauve top, against a black background.

for cross-border disputes

International
Arbitrator

Dr. Olena Perepelynska acts as an arbitrator in complex cross-border disputes involving Eastern Europe, Central Asia and Spanish-speaking jurisdictions. She brings a structured, commercially grounded approach, combining analytical rigour with procedural fairness.

Olena Perepelynska with long brown hair, wearing glasses and a black blazer over a mauve top, against a black background.

More than 20 years in international arbitration across 230+ cases as arbitrator and counsel in proceedings under ICC, LCIA, SCC, ICAC, UNCITRAL and other rules.

Trusted by leading institutions

120

+

Cases as Arbitrator

Experience as sole arbitrator, co-arbitrator, and presiding arbitrator.

120

Languages spoken

Ukrainian, Russian, English, Spanish, German, French

120

+

Years of experience

Deep expertise in international legal practice as arbitrator and counsel

Practice grounded in business reality

More than 230 arbitrations as arbitrator and counsel provide a dual perspective on party expectations, case strategy and procedural efficiency. Decisions are grounded in both legal analysis and industry-specific commercial context.

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Regional expertise where it matters

Regular appointments in disputes connected to Ukraine, Central and Eastern Europe, Central Asia and Spanish-speaking jurisdictions, with close understanding of local business practices and legal systems.

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Specialized industry expertise

Sector experience in construction and infrastructure, energy, agriculture and commodities, financial services, defense and aerospace, international trade and corporate/M&A disputes.

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Representative case experience

Representative matters include contract, joint venture and shareholder disputes, post-M&A claims and investment treaty disputes.

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Regional expertise where it matters

Regular appointments in disputes connected to Ukraine, Central and Eastern Europe, Central Asia and Spanish-speaking jurisdictions, with close understanding of local business practices and legal systems.

Broad experience

Broad experience ACROSS tribunal roles

01

More than 120 appointments as sole arbitrator, co-arbitrator and presiding arbitrator in commercial and investment disputes, under ICC, LCIA, SCC, ICAC, UNCITRAL and other arbitration rules.

Proficient in leading arbitration frameworks

02

Regular appointments in cases conducted under ICC, LCIA, SCC, ICAC, UNCITRAL Rules and Rules of regional institutions. Her experience as a former ICC Court Member (2018–2024) brings valuable insight into efficient case management and institutional expectations.

Experience in key European and Central Asian seats

03

Experience in arbitrations seated in Paris, London, Vienna, Stockholm, Kyiv, Almaty, Bishkek, Montreal and other cities.

Recognised in leading arbitration rankings

Selected in independent rankings and directories for work in international arbitration.

2025

Legal500 EMEA

Leading Individual – Dispute Resolution

“As team lead, Olena Perepelynska's international arbitration practice spans multiple jurisdictions, and she demonstrates particular prowess in commercial and investment treaty arbitrations”

2026

Chambers Global/Europe: Band 1

Dispute Resolution: International in Ukraine

“Head of international arbitration Olena Perepelynska is a market-leading international arbitration practitioner. She is also well regarded for her experience in cross-border litigation”

2026

Chambers Global/Europe: Band 1

Dispute Resolution: International in Ukraine

“Olena Perepelynska deeply understands all details of procedural issues and is able to describe the full matter and realistic probability of our result”

2026

Chambers Global/Europe: Band 1

Dispute Resolution: International in Ukraine

“Olena Perepelynska is a person of strong integrity, a disciplined arbitrator and an experienced arbitration practitioner who is well-versed in the latest developments in the field”

2023

GAR 45 under 45

Global Arbitration Review

Olena Perepelynska became the first lawyer in the CEE and FSU regions to have received recognition of that kind.

2025

Lexology Index

Thought Leaders – Arbitration

2026

Lexology Index

Arbitration

2025

Lexology Index

Thought Leaders – Transport: Aviation Contentious

2025

Legal500

Arbitration Powerlist: CEE

Thought leadership in arbitration

Author of more than 150 publications and frequent speaker at international conferences, covering a broad range of topics in international arbitration.

Guide

Take a Seat! A Guide to arbitration seats in Central and Eastern Europe (Ukraine's Chapter)

Co-authored guide to arbitration seats across the CEE region. Arbitration Association of Central and Eastern Europe, 2025.

Book Chapter

Chapter 33: Composition of the Tribunal

Book chapter on tribunal composition in international arbitration practice. Wolters Kluwer, 2024.

Book Chapter

Chapter 16: Prima facie establishment of a case

Book chapter on prima facie establishment of a case in provisional and emergency measures arbitration. Edward Elgar Publishing, 2023.

Article

Концепт арбітражного правопорядку (ordre juridique arbitral) як альтерверсія арбітражної юрисдикції (arbitral jurisdiction)

Co-authored article on the concept of arbitral legal order as an alternative vision of arbitral jurisdiction. Юридична Україна, 2024, № 9.

Core arbitration values

Each appointment is approached with the same commitments, regardless of parties or amounts in dispute.

Integrity

01

Ethical commitment and transparency in every arbitration. Maintaining confidentiality and trust throughout dispute resolution processes.

Procedural Fairness

02

Equal opportunity for every party to be heard. Strict adherence to due process, from first submission to final award.

Commercial Knowledge

03

A clear understanding of the business realities behind every dispute. Practical judgment that keeps awards grounded in commercial context.

Considering a neutral arbitrator?

Review my experience and case library, or contact me directly regarding potential appointments.

Recent activities and news

Conferences

ICC Paris Spring Meeting 2026

Insights from the ICC Commission’s Paris Spring Meeting on 2026 ICC Rules, the corruption report, AI in arbitration, and Ukraine’s participation in the global dispute resolution community.

Rankings

Chambers Global 2026 Recognition

The post announces renewed Chambers Global recognition and credits clients and the IMPACTA LAW team for sustained results.

Webinar

IBA Guidelines 2024 Discussion

Announcement for an online Ukrainian-language discussion presenting the 2024 IBA Conflicts Guidelines translation and key updates.

Rankings

Lexology Thought Leader in Arbitration

Dr. Perepelynska shares Lexology Thought Leader recognition in arbitration and thanks clients, colleagues, and peers for their trust.

Conferences

IBA Toronto 2025: Week in Review

A recap of the IBA Annual Conference in Toronto, ICC Commission discussions, and the Mannheimer Swartling Arbitration Breakfast on geopolitical pressures including Ukraine.