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gderancourt@franklin-paris.com
+ 33 1 45 02 79 00

Barreaux de Paris et New York

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Guillaume de Rancourt

Associé
Guillaume de Rancourt intervient au sein du département Résolution des Litiges, couvrant le contentieux, l’arbitrage et les enquêtes internes.

Fort d’une double culture juridique franco-américaine et de plus de vingt ans d’expérience à Paris et à New York, Guillaume accompagne ses clients dans le cadre de contentieux et d’arbitrages complexes. Il bénéficie également d’une expertise reconnue en matière d’enquêtes internes et de conformité, notamment dans la lutte contre le blanchiment d’argent, le financement du terrorisme, la corruption et les sanctions internationales.

Guillaume accompagne par ailleurs des groupes multinationaux dans la mise en place de dispositifs de conformité et de gouvernance adaptés aux exigences de multiples juridictions. Il les conseille tant sur les mesures préventives que sur la gestion de crise et les enjeux stratégiques globaux.

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  • Chambers 2026 – Band Three – Corporate Compliance & Investigations
    Guillaume de Rancourt of Franklin is highly sought after by corporates, banks and international financial institutions for his advice on compliance and internal investigations.
    “He knows every detail of every document in every case he is working on. He is extraordinarily personable, always available and makes you feel like you are the only person on earth”
  • Legal 500 2025
    • Compliance – Next generation Partner
      “Guillaume de Rancourt is a remarkable professional.”
      “Guillaume de Rancourt is clearly a star in the making.”
    • Dispute resolution: White-collar crime
      “Guillaume de Rancourt is a great professional and manages his cases in a very pragmatic manner, the objective always being to find a solution.”
      “He is excellent at leading debates and taking depositions.”
  • Décideurs 2025
  • Benchmark Litigation Europe – “Dispute Resolution Star” White-Collar Crime
  • Chambers 2025 – Band Three – Corporate Compliance & Investigations
    Guillaume de Rancourt enters the rankings this year. He is highly sought after by corporates, banks and international financial institutions for his advice on compliance and internal investigations.
    “He is an excellent lawyer. He can really adapt to the situation and he understands things very quickly; this is impressive.”
    “He is brilliant. He has real business vision, understands the client’s problems and brings legal solutions to complex issues in a simple way.”
    “He is very responsive, very intelligent and has an excellent understanding of the context and situation.”
  • Harvard Law School : LL.M.
  • Université de Paris II – Panthéon-Assas : D.E.S.S. Droit des Affaires et Fiscalité
  • Ecole des Hautes Études Commerciales (HEC Paris) : H.E.C.