LAWYER PROFILE
Guillaume Croisant

Guillaume Croisant

Global 2026

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Ranked in 1 practice area

About

Provided by Linklaters

Practice Areas

Guillaume is an all-round litigator specialising in international arbitration and cross-border litigation. He also regularly works on criminal, regulatory and internal investigations as well as compliance matters, with a specific focus on corporate sustainability and ESG. Guillaume’s experience spans various sectors and industries, in particular the financial services, construction, (post-)M&A, commercial contracts, restructuring and insolvency, energy and pharmaceutical sectors.

Guillaume has a decade of experience representing clients as counsel in commercial and investment arbitration as well as related state court proceedings. He has also been appointed as an arbitrator and as a tribunal secretary under the ICC, LCIA, CEPANI and NAI rules. He is the co-chair of the Belgian organisation of under 40-year-old arbitration practitioners (CEPANI40), a member of the board of directors and diversity and inclusion steering committee of the Belgian arbitration association (CEPANI), and a member of the ICC Commission on Arbitration and ADR. He undertook a one-year secondment in the international arbitration practice of our London office in 2017-2018.

Guillaume also devotes a substantial part of his practice to corporate sustainability/ESG, and broader compliance matters (including international sanctions and white collar crime). He lectures on ESG at the Université libre de Bruxelles (ULB). He is a member of the ICC Working Group on Business and Human Rights and of the ICC Commission on Corporate Responsibility and Anticorruption. He contributed the section “Business Integrity” to the 2nd edition of the United Nations Global Compact Guide for General Counsel on Corporate Sustainability and he is the co-editor of the first textbook on Belgian law and sustainability.

Please visit the Linklaters website for more details of Guillaume Croisant and his work in this category: https://www.linklaters.com/find-a-lawyer/guillaume-croisant

Chambers Review

Provided by Chambers

Chambers Global Guide

Arbitration - Belgium

Up-and-coming Individual
Up and Coming

Individual Editorial

Guillaume Croisant handles prominent ICC and CEPANI arbitrations, as well as the enforcement of arbitral awards. He often assists clients with post-M&A disputes, insolvency-related proceedings and contractual issues.

Strengths

Provided by Chambers

  • His trustworthiness and consistently positive, solution-driven attitude make him a standout professional and a real asset to any matter.

    ArbitrationChambers Global Guide
  • He is magic, pure and simple. He really amazes everyone both technically and in terms of making everything easier, coordinating every member of the team brilliantly.

    ArbitrationChambers Global Guide
  • Guillaume Croisant is an outstanding legal expert. He delivers precise, to-the-point advice that is both strategic and highly valuable.

    ArbitrationChambers Global Guide
  • Guillaume Croisant has thorough knowledge of his practice, and is highly responsive and pleasant to work with.

    ArbitrationChambers Global Guide

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