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Roberta Danelon Leonhardt

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Head of the Environmental Practices and Co-Head of the Multidisciplinary Teams of Crisis Management and ESG, Roberta Danelon Leonhardt is a specialist in environmental law, having outstanding performance in the management of complex environmental crises due to her skills for the composition of multiple interests in negotiation processes.  Leonhardt’s work embraces the coordination of working teams for the provision of environmental assistance in matters related to the implementation of potentially polluting projects and the analysis of environmental liabilities, support to investors and financial institutions for the identification and management of environmental risks, as well as working with environmental agencies and the Public Attorneys Office. Leonhardt is renowned in the Environmental Litigation market due to her negotiation skills and her solid base in the environmental area. She has also experience in assisting clients in a wide range of segments, such as infrastructure, logistics, food and beverage, chemicals, real estate, agribusiness, steel, mining, automotive, banking, pharmaceuticals, and heavy industry in general.

Recent acknowledgments

  • Chambers Global: Environmental, Social & Governance (ESG) (2023)
  • Chambers & Partners Brazil: Environmental (2021-2023) and ESG (2022-2023)
  • Chambers Latin America: Environmental (2016-2021)
  • Chambers Women in Law: “Mentoring Lawyer of the Year - Leadership in the Profession” for Latin America (2015)
  • Women in Business Law Americas: Environment Law of the Year (2023)
  • The Legal 500: Dispute Resolution (Including Business Criminal) (2019); Environmental (2021-2024)
  • Leaders League: Environmental (2020-2023)
  • Latin Lawyer 250: Environmental (2018-2023)
  • Latin Lawyer National: Environmental (2020)
  • Análise Advocacia Mulher: Environmental and in the Construction and Engineering, Trade, Aeronautics, and Environmental Services and Sanitation sectors (2021); Environmental, in the Aeronautical, Agriculture and Livestock, Business, Pharmaceutical, Real Estate, Oil and Gas, Chemical and Petrochemical, Insurance, Steel and Mining and Transportation and logistics sectors, and in São Paulo (2022); Environmental, Aeronautical, Commerce, Pharmaceutical, Real Estate, Chemical and Petrochemical, Insurance and in São Paulo (2023)
  • Análise Advocacia 500: Environmental, Chemical and Petrochemical, and São Paulo (2020-2021); Environmental, Aeronautics, Commerce, Chemicals and Petrochemicals and São Paulo (2022); Environmental, Commerce, Chemicals and Petrochemicals and in São Paulo (2023)
  • Women in Business Law Expert Guide: Environment (2022-2023)
  • Who's Who Legal - Thought Leaders Brazil: Environmental (2019-2022)


  • Crisis Management and Business Continuity, Massachusetts Institute of Technology, Boston, EUA (short professional course, 2018)
  • London School of Economics and Political Science, United Kingdom (Masters / LL.M. in Public International Law, 2003)
  • Universidade de São Paulo (University of São Paulo), Brazil (Postgraduation in Environmental Law, 2002)
  • Universidade de São Paulo (University of São Paulo), Brazil (Bachelor of Laws, 1999)

Other qualifications

    • Member and Officer of the International Bar Association (IBA) (Programme Officer, Environment, Health and Safety Law Committee, 2015-2016; Senior Vice Chair 2019; Vice-Chair, Environment, Health and Safety Law Committee, 2017-2018 and 2022; Co-Chair, Environment, Health and Safety Law Committee 2023-2024)
    • Member of the Marketing and Business Development Committee of Machado Meyer (2023)
    • Member of the CORB Committee of the Pacto Global Brasil (2023)
    • Member of the Executive Council of Machado Meyer (2018 - 2021)
    • Member of the Professional Quality Committee of Machado Meyer (2018-2019)
    • Coordinator of the Environmental Committee for the Centro de Estudos de Sociedades de Advogados (Studies Center of Law Firms - CESA) (2014-2019)
      • Member of the Steering Committee of Machado Meyer (2017)
      • Member of the Diversity Committee of Machado Meyer (2014-2017)
  • Forms part of the Brazilian Mission for the World Trade Organization, Switzerland (2005)
  • Foundation of International Environmental - Law and Development (FIELD), United Kingdom (2003)


  • Brazilian Bar Association (OAB)
  • International Bar Association (IBA)
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