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

Paris and New York Bars

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Guillaume de Rancourt

Partner
Guillaume de Rancourt works in the Dispute Resolution department, covering litigation, arbitration and internal investigations.

Guillaume has a dual French-American legal background and over twenty years of experience assisting clients with complex domestic and international litigation and arbitration matters. He is recognised as an expert in international investigations and compliance, particularly in the fight against money laundering, terrorist financing, and corruption.

He specialises in defending white-collar criminals and has worked on cases involving corporate corruption, criminal and civil fraud, money laundering, and violations of economic sanctions.

He also helps multinational groups implement compliance and governance systems that meet the requirements of multiple jurisdictions, and advises them on preventive measures, crisis management, and global strategic issues.

Practice areas
SECTORS
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  • 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.”
  • 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
    • Internal investigation – Excellent
    • Export Control & international sanctions – Highly recommended
    • Corporate sustainability due diligence – Highly recommended
    • Compliance program – Highly recommended
    • CSRD – Sustainability reporting – Mapping
  • Benchmark Litigation Europe – “Dispute Resolution Star” White-Collar Crime
  • Harvard Law School : LL.M.
  • University of Paris II – Panthéon-Assas : Master Degree in Business Law
  • Ecole des Hautes Études Commerciales (HEC Paris) : H.E.C.