Rafael Mariano Grossi

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Director General of the International Atomic Energy Agency (IAEA)

Data Confidence: 72% · Sources: 1 · Last Updated: Sep 18, 2026

Net Worth ▲: Undisclosed — estimated significant wealth
Reach ▲: 1.0B people
Power ▲: Serves as Director General of the International Atomic Energy Agency since December 3, 2019, exercising international oversight on nuclear safety and non-proliferation.
Influence ▲: Led global weapons transparency initiatives as president of the United Nations Group of Government Experts on the International Weapons Registry from 1997 to 2000.
Network ▲: Maintains extensive diplomatic channels through his tenure as Argentine ambassador to Austria, Slovenia, and Slovakia from 2013 to 2019, as well as senior roles within the United Nations.
Legacy ▲: Built a decades-long diplomatic record in nuclear policy spanning the Argentine foreign service, United Nations disarmament bodies, and top leadership at the IAEA.
Trajectory ▲: Rising ↑ — first assessment on record.

About

Rafael Mariano Grossi is an Argentine diplomat serving as the Director General of the International Atomic Energy Agency (IAEA) since December 3, 2019. Born in Buenos Aires in 1961, he earned a B.A. from the Pontifical Catholic University of Argentina and advanced degrees from the University of Geneva and the Graduate Institute of International Studies. He previously served as Argentina's ambassador to Austria, Slovenia, and Slovakia between 2013 and 2019, alongside roles at the United Nations and INVAP.