Giancarlo Aragona (born November 14, 1942) is an Italian diplomat who served as ambassador of Italy to NATO, Russia and United Kingdom and Secretary General of OSCE.

Returning to Rome in 1980, he worked in the Africa Office of the Directorate General for Political Affairs of the Ministry of Foreign Affairs; in 1982 he headed the Mediterranean and Middle East Office of the Directorate General for Development Cooperation, and two years later became the first political counselor at the Italian Embassy in London.

In 1996 he became Secretary General of the Organization for Security and Cooperation in Europe (OSCE) in Vienna, serving a three-year term.

[1] He ended his diplomatic career in 2009 due to age limit, and was called by NATO among the experts in charge of preparing a proposal for reforming the Atlantic Alliance.

[3] As of Jan. 1, 2012, he is vice president of the Science for Peace world conference, which is held annually at Bocconi University in Milan.