Anaïs Berthier is a Senior Lawyer and Head of ClientEarth Brussels. She provides strategic direction, coordination and oversight of our work engaging with the EU institutions and other vital stakeholders.


Anaïs has worked for law firms in France and in Belgium, including Huglo-Lepage & Associés, handling issues on a wide range of European law matters including waste, chemicals (including on the REACH Regulation), facilities’ permits, environmental liability and climate change. Before moving to Brussels, she worked as a lawyer for the French Ministry of the Environment, where she focused on Kyoto Protocol and World Trade Organisation (WTO) issues.

Before becoming Head of EU Affairs at ClientEarth she led our work on strengthening the rule of law. This included ensuring the implementation and enforcement of the procedural rights provided by the Aarhus Convention: access to information, public participation in decision-making process and access to justice in environmental matters.


She holds degrees in International and European law from French and British universities. She was admitted at the French bar in 2005.

I’m a lawyer. I also care deeply about leaving the world in a better state than I found it. That’s why I joined ClientEarth more than a decade ago, so I could use my legal skills to make my own contribution to the fight against the destruction of our environment.