David Bigge is an attorney-adviser at the U.S. Department of State. From 2016 to 2019, he served as the U.S. Agent to the Iran-U.S. Claims Tribunal. He has also served as Deputy Agent in two cases at the International Court of Justice, and as the primary U.S. point of contact for the International Criminal Court, the Permanent Court of Arbitration, the UN International Residual Mechanism for Criminal Tribunals, and the Hague Conference on Private International Law. Mr. Bigge also served for six years on the team that represents the United States in investor-state dispute settlement (ISDS). Prior to joining the State Department in 2010, Mr. Bigge was an attorney in private practice in New York for nine years, specializing in international arbitration and litigation for and against foreign sovereigns. He has appeared in U.S. federal and state courts and in arbitrations administered by the ICC and AAA.

Mr. Bigge is currently the co-chair of the American Society of International Law International Courts and Tribunals Interest Group, and publishes and speaks regularly on international dispute resolution. He previously taught Advanced Topics in International Arbitration at Georgetown University Law Center.