János Martonyi is a Széchenyi Prize winner professor, politician, attorney-at-law, international arbitrator, and author of numerous books, studies as well as articles in the fields of international trade law, competition policy and law, European integration and law, Central European cooperation, global regulations and international relations. Between 1989 and 1990 he was the Government Commissioner for Privatization, from 1990 to 1991 he served as the State Secretary for Administration in the Ministry of International Economic Relations, while from 1991 to 1994 he was the State Secretary for Administration at the Ministry of Foreign Affairs. Between 1991 and 1998, and then between 2002 and 2009, he was the managing partner of the Budapest office of the international law firm Martonyi, Baker & McKenzie.
From 1999 to 2009 he was the head of the Department of Private International Law and International Economic Law at the University of Szeged and is currently a visiting professor at the National University of Public Service. Between 1998-2002 and 2010-2014, he was the Minister of Foreign Affairs of Hungary.
He is the chairman of the Board of Trustees of the Center for Democracy Public Foundation and the Blue Planet Foundation, a member of the Corvin Chain Board, an honorary citizen of Szada, the recipient of the Middle Cross of the Order of Merit of the Republic of Hungary and the recipient of several foreign orders of merit.