Untying knots in international arbitration.
Bridge between Europe and Latin America for conflict resolution
The parties and the court aiming at the same goal
Legal expert reports: an anchor for safe guidance
Passion for international arbitration and academia
Arbitrating with vocation and responsibility

Photograph: Sylvia de la Jara

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ABOUT ME

Cecilia O’Neill de la Fuente

It is not enough to know the law to be a good lawyer. An interdisciplinary approach with a strong humanistic, economic and business component ensures that lawyers – and especially arbitrators –  make decisions with greater sensitivity and based on an in – depth analysis.

Only then will we be more lucid, more attentive and more aware of the world around us. In the world of arbitration, this means that we must make people’s lives easier: we must untie knots.

ARBITRATION

I am an arbitrator and legal expert. I am a professor in the Department of Commercial Law at Universidad Carlos III de Madrid, a member of the Council of the ICC Institute of World Business Law, and vice president of CEIA Mujeres, an initiative of the Club Español e Iberoamericano de Arbitraje (CEIA).

+180

domestic and international arbitration processes

55%

contractual, commercial and corporate matters

45%

regulatory and public procurement matters

  • In Peru, Colombia, Mexico, Spain, and other jurisdictions.
  • I have acted as president of the tribunal or sole arbitrator in close to half of these cases.

ACADEMY

One of the most beautiful, significant and relevant aspects of my professional life is my academic life.

Until 2022, I was linked to Universidad del Pacífico in Peru for twelve years, where I was a senior lecturer and Dean of the School of Law, after being head of the Academic Department of Law and Vice-dean. I am now continuing my teaching activity in Spain, at Universidad Carlos III de Madrid.

INSIGHTS

Seminar on the Use of Spanish in International Arbitration — Peace Palace, The Hague, 2026

Cecilia O’Neill took part in this seminar held at the Peace Palace, in The Hague, where she addressed the role of the Spanish language in international arbitration proceedings.

Latin American Arbitration Conference (CLA) — Buenos Aires, 2026

Cecilia O’Neill took part in the Latin American Arbitration Conference, held in Buenos Aires, sharing her experience as an arbitrator in the region.

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SHALL WE TALK?

I will be happy to help you.