Image of Guillaume Croisant

Guillaume Croisant

Associate, Brussels


Avocat / Advocaat, Member of the Brussels Bar


Guillaume has been an associate in the dispute resolution practice group of Linklaters since 2014. Trained in both civil and common law, he specialises in international arbitrations, litigations and investigations.

Guillaume has been working in the international arbitration practice of our London office since October 2017. He is a member of several arbitration associations (a.o. ICC Young Arbitrators Forum, CEPANI 40, Francarbi) and has been appointed secretary to various arbitral tribunals.

Guillaume is also a teaching assistant in private international law at the Université Libre de Bruxelles, and monitors the legal developments in this field for the Journal des Tribunaux and the Revue de Droit Commercial Belge. He regularly publishes on various topics relating to his practice, such as business and human rights, class actions, third party funding and international arbitration.

Professional experience

2017 to date Secondee (international arbitration), Linklaters London
2015 to date Teaching assistant in private international law, Université Libre de Bruxelles
2014 to date Associate, Linklaters Brussels (finalist of the 2016 European Award for Exemplary Partnership in the Public Interest)
2014 Admitted to the Brussels Bar (Prix George Boels)



2013-2014 University of Oxford, Magister Juris (Wiener Anspach Foundation Scholar)
2011-2013 Université Libre de Bruxelles, Master of Laws (Prix René Marcq, Prix André Bruyneel, Premier Prix d’Excellence du Master en droit)
2008-2011 Université Libre de Bruxelles, Bachelor of Laws


French, English and Dutch


F. Lefèvre, P. Callens and G. Croisant, “The Legality of Third Party Funding Mechanisms under Belgian Arbitration Law”, b-Arbitra, 2017/1
G. Croisant, “Recent developments in the Yukos saga see assets in Belgium belonging to Russia unfrozen”, Arbitration Links Blog, 27 June 2017
G. Croisant, “Towards the Uncertainties of a Hard Brexit – An Opportunity for International Arbitration”, Kluwer Arbitration Blog, 27 January 2017
G. Croisant, “Fog in Channel – Continent Cut Off. Les conséquences du Brexit pour le droit international privé et l’arbitrage international”, J.T., 2017/2, pp. 24-33.
G. Croisant, “Droit international privé – chronique de législation nationale et internationale (en ce compris la jurisprudence de la Cour constitutionnelle belge)”, J.T., 2016/41, pp. 737 et seq.
G. Croisant, “La reconduction des centrales nucléaires belges”, RDIR, 2016/1, pp. 486 et seq.
F. Lefèvre and G. Croisant, “L’action en réparation collective – ses coûts et son financement” in J. Englebert and J.-L. Fagnart (Dir.), L’action en réparation collective, Anthémis, 2015, pp. 99-126
X. Taton and G. Croisant, “Le principe de non-discrimination dans l'accès aux réseaux: une application dépendant des objectifs poursuivis” (obs. under C.J.E.U., 11 February 2015, C-340/13), RDC, 2015/9, pp. 912-920
G. Croisant, Analyse du Règlement 2015/909/UE du 12 juin 2015 , RDIR, 2015/3, pp. 372 et seq.
G. Croisant, Analyse de la Directive 2014/94/UE du 22 octobre 2014, RDIR, 2015/2, pp. 253 et seq.
G. Croisant, “Are a Bilateral Investment Treaty Arbitration and a Proceeding Before the European Court of Human Rights Compatible?”, Kluwer Arbitration Blog, 27 January 2015