Izumi Nakamitsu (中満 泉 Nakamitsu Izumi; born 1963) is a United Nations Under-Secretary-General of Disarmament Affairs from March 29, 2017, appointed by United Nations Secretary-General António Guterres.

[1] Nakamitsu began her career with the United Nations in 2008, and during that time has held several high-level positions with the Organization.

From 2016 to 2017, she was the Special Adviser Ad Interim on Follow-up to the Summit on Addressing Large Movements of Refugees and Migrants.

Nakamitsu is married to Magnus Lennartsson,[2] a Swedish diplomat serving as Deputy Permanent Representative for the Swedish Mission to the United Nation in New York, and former Deputy chief of mission for the Embassy of Sweden, Tokyo.

In addition to her role as Assistant Secretary-General, United Nations Secretary-General Ban Ki-moon also appointed her as Special Adviser ad interim on Follow-up to the Summit on Addressing Large Movements of Refugees and Migrants in 2016; in this capacity, Nakamitsu succeeded Karen AbuZayd.