Siegfried H. Elsing (born 1950 in Essen, West Germany) is a German business lawyer.
He is senior partner Germany of the international law firm Orrick, Herrington & Sutcliffe LLP and honorary professor at the Heinrich Heine University in Düsseldorf.
Following that he worked as a research assistant at the Institute for Labor and Business Law at the Westphalian Wilhelms-University in Münster.
He regularly lectures and appears as speaker at conferences in Germany and abroad and is author of numerous publications on arbitration and international business law.
He is also a member of various national and international associations (AAA, ABA, AIJA, ASA, Deutscher Anwaltverein e.V., DIS, IBA, ICCA, LCIA).