Justin R. Rassi is a litigation associate in the firm’s International Dispute Resolution Group, resident in New York. He has a broad-gauged practice that focuses on international arbitration and international litigation.

Mr. Rassi has particular experience in mining, natural resources, and contract disputes arising out of Australia, Africa, Asia, and the Pacific. He regularly advises clients on complex damages issues and leverages a degree in finance to work seamlessly with valuation experts.

Mr. Rassi has represented clients in international commercial and investment arbitrations administered by major arbitral institutions, including the ICC, ICSID, LCIA, PCA, and SIAC, in addition to ad hoc arbitrations governed by the UNCITRAL Rules. He has also represented or advised clients in litigation proceedings in Australia and the United States, including in several appeals.

Mr. Rassi maintains an active pro bono constitutional and civil rights litigation practice in U.S. courts, with a particular emphasis on LGBTQ+ rights. He has led or worked on matters in Colorado, New York, Ohio, and Oregon.

Mr. Rassi is active in professional organizations. He currently serves as a rapporteur to the ICCA-ASIL Task Force on Damages in International Arbitration and is serving a two-year term from 2021-2022 on the Young Singapore International Arbitration Centre (YSIAC) Committee.

Before joining Debevoise in 2016, Mr. Rassi clerked for the Hon. Justice V.M. Bell AC of the High Court of Australia, practiced in the dispute resolution group of a leading international law firm in Australia, and taught tort law at the Australian National University. The High Court of Australia is the supreme court in Australia.

Mr. Rassi received an LL.M. from the New York University School of Law in 2016, specializing in International Business Regulation, Litigation and Arbitration (“IBRLA”), where he held the Arthur T. Vanderbilt scholarship. Graduating at the top of his specialization, Mr. Rassi received the IBRLA Award for academic merit. Mr. Rassi received an LL.B. with First Class Honors and a B.Com degree in finance from the University of New South Wales in 2012, where he was an editor of the University of New South Wales Law Journal.

Mr. Rassi is admitted as an Attorney and Counselor-at-Law in the State of New York and as a Lawyer of the Supreme Court of New South Wales. Mr. Rassi may also appear before the U.S. District Court for the Southern District of New York, the High Court of Australia, and all courts of federal jurisdiction in Australia.


  • New York University School of Law, 2016, LL.M.
  • University of New South Wales, 2012, B.Com
  • University of New South Wales, 2012, LL.B.

Bar Admissions

  • New South Wales
  • New York