Siegfried Elsing is a partner at Orrick, Herrington & Sutcliffe and an arbitration practitioner with more than 40 years of experience in national and international proceedings.

He has acted as counsel or arbitrator in more than 300 arbitration proceedings, including ad hoc proceedings and arbitrations under the rules of the leading arbitration institutions.

Siegfried is admitted to practice in both Germany and New York. He holds degrees from University of Münster, Faculty of Law (Dr. jur.) and Yale Law School (LL.M.). He teaches arbitration law at Heinrich-Heine-University, Faculty of Law, Düsseldorf (Honorary Professor).

Siegfried was a member of the Advisory Board of the American Arbitration Association (2009 to 2020) and a member of the Panel of Conciliators of the International Centre for Settlement of Investment Disputes (ICSID) (2011 to 2017). He was a member of the Board of the German Arbitration Institute (DIS) (2012 to 2022) and. He was also Chairman of the Mediation Committee of the International Bar Association (IBA) (2007-2008).

Siegfried is co-editor of the German Arbitration Journal (Zeitschrift für Schiedsverfahren (SchiedsVZ)). He regularly lectures and publishes on international arbitration and comparative law.