Investor-State Law Guide

People Profiles Sebastiano Nessi

Sebastiano Nessi


Sebastiano Nessi is an international arbitration and disputes partner based in Geneva. With a dual civil law and common law background, he has a wealth of experience in representing clients in complex international commercial, investment and sports arbitration matters which have arisen worldwide, both ad hoc and under all major institutional rules, as well as in enforcement and setting-aside proceedings. He also represents clients in domestic and international litigations (commercial, financial, asset recovery) and advises on international sanctions and public international law matters. In addition to his counsel work, Mr. Nessi, who is a Fellow of the Chartered Institute of Arbitrators, sits frequently as an arbitrator. Consistently recognised internationally by all leading directories, Mr. Nessi is ranked as one of a small numbers of Global Elite Thought Leaders by Who’s Who Legal.

Mr. Nessi has extensive experience advising and representing private companies, states, and state-owned entities in commercial arbitrations conducted ad hoc and under all major arbitration rules. His experience encompasses disputes in the construction and infrastructure, energy (including renewables), oil and gas, mining, chemicals, commodities, insurance, telecommunication and media, pharmaceuticals, banking, aerospace and transportation, real estate, maritime, and distribution sectors.

He has appeared as counsel in some of the largest international arbitration cases of the last decade. He has secured a series of multi-million/billion dollar awards for his clients, and defended others in claims arising in a number of different business sectors.

Sebastiano Nessi has advised and represented several states in some of the largest investment treaty arbitrations, and has also advised states on the negotiation and drafting of trade and investment agreements.

He has also experience in representing athletes and sports federations before the Court of Arbitration for Sports in Lausanne.

Mr. Nessi, who is a Fellow of the Chartered Institute of Arbitrators (FCIArb) and a past Vice-Chair of the CIArb YMG group, sits regularly as arbitrator (Chairperson, Sole Arbitrator or Party-appointed Arbitrator) and also appears before arbitral tribunals and state courts as an expert on arbitration and other international matters.

Collapse Charts Expand Charts


  • Geneva
  • French
  • Spanish
  • English
  • Italian

Enhance your profile today

Enrich your profile with images, links and critical information such as nationality, place of residency and language profiencies.

Start Your Trial Today