Thomas Gürber

Ambassador and Permanent Representative of Switzerland to the United Nations Office - Switzerland Federal Department of Foreign Affairs

Ambassador Thomas Guerber has been Switzerland’s Permanent Representative to the United Nations Office in Geneva since 1 April 2026.

Prior to this assignment, he served as Deputy State Secretary for Foreign Affairs since January 2023. Since August 2022, he was also Switzerland’s UN Director and head the UN Division of the Federal Department of Foreign Affairs (FDFA).

From 1 July 2016 to July 2022, he was the Director of DCAF – Geneva Centre for Security Sector Governance. From 2010 to 2013, Ambassador Guerber was Switzerland’s Deputy Permanent Representative to the United Nations in New York. From 2007 to 2010, he worked as a Counsellor for financial, budgetary, and institutional issues at Switzerland’s Permanent Mission in New York. Previously, he was also posted to London and Copenhagen and held various other functions within the FDA’s Middle East and North Africa Division and Human Security Division, including Head of Section for Peace Policy and Human Security.

He entered the Swiss diplomatic service in 1997. Thomas Guerber holds an LL.M. degree in public international law and international economic law from the University of Berne, a master’s degree in European integration and economics from Institute for European Global Studies (Basel) and a master’s degree in history and literature from the University of Basel. Thomas Guerber was born in Bangkok in 1967. He is married and has two sons.

Apart from his mother tongue German, he is fluent in English and French.