Thomas Mayr-Harting (AT) is the Special Representative of the OSCE Chairperson-in-Office for the Transdniestrian Settlement Process. He was Managing Director for Europe and Central Asia in the European External Action Service from November 2015 to August 2019. Before that he served as Head of the Delegation of the European Union to the United Nations in New York (October 2011 to December 2015) and as Permanent Representative of Austria to the United Nations (December 2008 to October 2011). In the latter capacity he represented Austria on the UN Security Council in 2009 and 2010.

Thomas Mayr-Harting joined the Austrian diplomatic service in 1979. In the course of his career he worked, inter alia, at the Austrian Mission to the European Communities in Brussels, the Austrian Embassy in Moscow, the Private Office of the Austrian Foreign Minister and as Director for Security Policy and Policy Planning. Between 2003 and 2008 Thomas Mayr-Harting served as Political Director (Director General for Political Affairs) of the Foreign Ministry of Austria. From 1999 to 2003 he was Austrian Ambassador to Belgium and Head of the Austrian Mission to NATO.

Thomas Mayr-Harting studied law at the University of Vienna. He is an alumnus of the College of Europe (Promotion Karl Renner). In 1978, he was also awarded the Diploma of The Hague Academy of International Law.