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Beccar Varela

Work +54 11 4379 6800
Fax +54 11 4379 6860
Buenos Aires, Buenos Aires
Beccar Varela, Oscar Aguilar Valdez, Buenos Aires, ARGENTINA

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Oscar Aguilar Valdez

Work +54 11 4379 6832
Beccar Varela

Work Department

  • Administrative Law
  • Energy
  • Project Finance
  • Litigation and Arbitration
  • Communications


He chairs the Administrative Law department of Beccar Varela. His practice areas include public procurement, infrastructure concessions and public private partnerships, public works, economic regulation of utilities and public interest activities, public finance, land and zoning, project financing and governmental liability.

He has represented local and foreign clients in complex public law litigation cases before federal and provincial judiciaries, including the Federal Supreme Court of Justice, and has acted as local counsel in international arbitration proceedings under the rules of ICC and ICSID. Likewise, he has acted as expert witness in international arbitration cases in matters related to public law.  He has also participated in transactions related to the energy, water and sewerage, communications, ports, transport and public finance sectors and has assisted public sector authorities on matters related to his areas of expertise.


Oscar R. Aguilar Valdez has been a partner of Beccar Varela since 1999. He started his career at the firm in 1991.

He is professor of Administrative Law at several Argentinean and Latin American universities. He has participated as speaker in several congresses on matters related to public law and is author of more than forty publications in the public law field.


He speaks Spanish and English.


He is a member of Colegio Público de Abogados de la Capital Federal (Buenos Aires Bar Association), Colegio de Abogados de la Ciudad de Buenos Aires (Chairman of the Administrative Law Committee), International Bar Association, Instituto de Derecho Administrativo de la Academia Nacional de Derecho (Administrative Law Institute of the National Academy of Law), Asociación Iberoamericana de Estudios de Regulación, Asociación Argentina de Derecho Administrativo (Argentine Association of Administrative Law) and Sociedad Argentina de Derecho de la Construcción (Argentine Society of Construction Law).


Oscar received his law degree from the Universidad Católica Argentina (1993) and obtained his LLM in Administrative Law from Universidad Austral, Argentina (Magna Cum Laude, 1993).



Within: Environment

Very responsive’, Beccar Varela has a strong track record in advising on the environmental law aspects of corporate transactions – it also advises on compliance and contentious matters. Administrative law expert Oscar Aguilar Valdez heads a ‘collaborative team’ that also draws upon the experience of ‘well-informed and practical’ energy specialist José Carlos Cueva and senior associate Ángeles Murgier. Highlights included advising energy transportation and distribution company, LITSA, on regulatory matters.

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Public law

Within: Leading lawyers

Oscar Aguilar Valdez - Beccar Varela

Within: Public law

The public law practice at Beccar Varela handles a broad mix of public procurement, public finance and administrative and judicial review proceedings. Group head Oscar Aguilar Valdez is a prominent name and recently advised the board of Aerolíneas Argentinas on issues concerning new competing carriers in the local market. Agua y Saneamientos Argentinos also turned to the firm for assistance with two international public tenders for the execution of works related to the provision of potable water services. Juan Antonio Stupenengo is also recommended.

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