Mr Rafael González Arzac > Mitrani Caballero & Ruiz Moreno Abogados > Buenos Aires, Argentina > Lawyer Profile

Mitrani Caballero & Ruiz Moreno Abogados

Work Department

Public Law and Business Regulation


Partner within the Administrative Law and Business Regulation practice at Mitrani Caballero & Ruiz Moreno


Rafael González Arzac is an expert in administrative law, public contracting, public services regulation and matters related to the public administration and regulated activities and he has been involved in matters of high complexity and importance in tax litigation, representing taxpayers before administrative agencies and courts of justice at all levels, including the Argentine Supreme Court of Justice.

Prior to joining the firm, Mr. González Arzac was a partner at Bruchou, Fernández Madero, Lombardi & Mitrani (2002-2007), an associate with Alegría Law Firm (1990-2002), a senior member (judge) of the National Administrative Court of Appeals (1984-1990) and Secretary to the Supreme Court of Justice of the Province of Buenos Aires (1979-1984).

Mr. González Arzac has been repeatedly recommended as one of the “Leaders in their Field” (Public Law-Argentina) by Chambers Latin America. In addition, he has been an acting professor in Administrative Law, Constitutional Law and Public Law at the Universidad de Buenos Aires for many years. 




Mr. González Arzac is a member of the Instituto de Derecho Administrativo of the Academia Nacional de Derecho y Ciencias Sociales and Arbitrator of the Tribunal Arbitral of the Unión Industrial Argentina.

He is admitted to practice law in the City of Buenos Aires.


Universidad de Buenos Aires, School of Law (Postgraduate degree in Administrative Law, 1971)

Universidad Nacional de La Plata, School of Law (Abogado, 1963)

Lawyer Rankings

Argentina > Public law

Experienced transactional, dispute resolution and public law partner Horacio Ruiz Moreno leads a Mitrani Caballero & Ruiz Moreno Abogados public law team that advises clients on international public tenders and disputes, as well as offering support on project financing for large infrastructure projects. The practice is particularly prominent in the natural resources and life sciences sectors, but also covers other regulated industries including chemicals, transportation and automotive. In addition, the team is regularly sought out to advise on the public law aspects of M&A transactions and assist clients through regulatory disputes and negotiations with governments related to asset expropriations. Rafael González Arzac, who has broad administrative law, public contracting and public services regulation expertise, is another key name, alongside Néstor Buján, who advises international organisations, governments and private clients on contentious and non-contentious public law and dispute resolution matters. Administrative and environmental law specialist María Laura Lede Pizzurno focuses her practice on regulated industries, including natural resources, life sciences and infrastructure. Associate Luciana Casagrande moved to Pérez Alati, Grondona, Benites & Arntsen in January 2022.

Argentina > Dispute resolution

Mitrani Caballero & Ruiz Moreno Abogados litigates on civil and commercial matters and advises clients across a range of administrative procedures. The team also undertakes contentious work related to labour, IP, regulatory issues, insurance and tax, and is often sought out to defend clients in class actions initiated by consumer associations. The practice handles matters at all levels of the Argentine justice system and is also active in domestic and international institutional arbitration proceedings. Conflict prevention and management is another strong area. The practice is co-lead by Horacio Ruiz Moreno, who specialises in administrative law, public services regulation, arbitration and mediation; and Cristian Krüger, an expert in administrative law, public contracting and regulation. Experienced public law specialist Rafael González Arzac provides additional partner-level support, with corporate partner Carlos Trogolo Eliçabe, who also has an active civil and commercial litigation practice, another key name.