Lucas Giardelli

International Tax & Transfer Pricing, Tax, Tax Transactions & Planning


Lucas Giardelli is a Tax partner in Mayer Brown’s New York office and a co-leader of the International Tax & Transfer Pricing product team. His practice is focused on international tax planning for US and non-US multinational companies (including cross-border restructurings and financings, holding company structures, tax attribute optimization, IP planning, and post-acquisition integration). Lucas also regularly advises clients on the tax aspects of acquisitions, divestitures, financing arrangements and other corporate transactions. He also has experience counseling high-net worth individuals on international tax matters.

Lucas frequently writes and speaks on international and corporate tax topics. He has presented at events hosted by the American Bar Association, the International Fiscal Association and Tax Executives Institute, and authored articles published on Tax Management International Journal, Tax Notes International and the Journal of International Taxation, among others. Prior to joining Mayer Brown, Lucas practiced tax law at a leading law firm in Argentina.


  • Harvard Law School, LLM
  • Universidad Austral, LLM in Tax Law
  • Universidad Austral, Law Degree (Gold Medal Award)


  • New York
  • Argentina


  • Spanish

Professional & Community Involvement

  • International Fiscal Association
  • American Bar Association, Tax Section