Gauthier van Thuyne

Gauthier van Thuyne


Gauthier is Head of Belgium Environmental and Public Law, and is member of the global Environment and Sanctions and heads the Belgian sustainability team.

Gauthier advises companies on planning and environmental law - with a particular focus on permits for industry and manufacturing, real estate and energy transition projects and technologies. He specialises in European Green Deal regulations and climate change (including EU ETS, CBAM, voluntary carbon markets) sustainability disclosures and reporting (including CSRD), business and human rights issues in supply chains (CSDDD, Deforestation Regulation, Batteries Regulation, Conflict Minerals) and greenwashing (advice and litigation) .

Gauthier advises on compliance with REACH and other EU chemical regulations, as well as with EU product regulations (including packaging and packaging waste, ELV, Batteries, WEEE and RoHS) and waste, contaminated land, hazardous substances and environmental compliance issues.

He also assists public authorities, companies, banks, public-funded entities and utilities on all types of public contracts, including public-private partnerships (PPPs), public procurement and large transactions, such as concessions (water distribution, waste management etc) and granting of limited rights (schaarse rechten like subsidies, licenses, operating rights, access to public contracts and property).

Gauthier has a deep understanding of the different procedures, approaches and strategies required to deal with complex environmental and public law issues, and has extensive litigation experience in these areas of law before the administrative, civil and criminal courts, as well as before the European courts.


Representative matters

A national airport operator on environmental and aircraft noise related matters, including in relation to its environmental permits and related litigation.

The Port of Zeebrugge, owned by MBZ, in connection with its landmark merger with the Port of Antwerp. The combination, which has been discussed for more than 10 years, brings together the first and second largest ports, not just in Belgium, but in Europe. 

Telenet on its joint venture with Fluvius for the creation of a network infrastructure company in Flanders. We also advised the client on the auction sale of its mobile tower infrastructure, which involves the ring-fencing of client's infrastructure asset followed by a (potential) sale to a third party – a never-before-been-done type of transaction in the Belgian market with significant regulatory implications.

The public waste agency, on the PFOS pollution case relating to a major contamination in Zwijndrecht (port of Antwerp) with so-called “forever chemicals”, and the related parliamentary investigations.

Published Work

  • van Thuyne, G. (2022). To waste or not to waste? Raad van State stelt de grens tussen grondverzet en opslag van afvalstoffen op scherpt, Tijdschrift voor Milieurecht, vol. 5, p.545.
  • van Thuyne, G., Goossens, F. (2022). What are the main statutes and regulations relating to the environment? Getting the Deal Through, Lexology.
  • van Thuyne, G., Goossens, F. (2022). In brief: GHG emission regulation and allowances in European Union, Lexology.
  • van Thuyne, G., Goossens, F. (2022). Q&A: climate and environmental regulation in European Union, Lexicology.

Speaking Engagements

  • Goodman training, “EU level sustainability / ESG Topics”, 27 March 2024
  • Greenwashing Update 2024 webinar, 20 March 2024
  • VOKA webinar: SOS Stikstof: analyse decreet en impact op vergunningen, 29 January 2024
  • COP28 Global client webinar, 13 December 2023

Leadership Positions And Professional Affiliations

  • Forum Milieuadvocaten
  • Belgische Vereniging voor Milieurecht
Gauthier is very practical." Band 1 lawyer
Chambers Europe 2024 - Regulatory: Environment - Europe-wide
Gauthier van Thuyne is a brilliant lawyer." Band 1 lawyer
Chambers Europe 2024 - Planning & environment



Stagiair, Belgium, 1994

Admitted as advocaat, Belgium, 1999

Registered Foreign Lawyer, England and Wales, 2021


Law Degree, Universiteit Gent (RUG), 1992

Postgraduate, Business Law, Université Libre de Bruxelles, 1994


Dutch, English, French
A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.