Ibrahim Agboola Gambari, CFR ((Listenⓘ); born November 24, 1944), is a Nigerian academic and diplomat who served as Chief of Staff to the President of Nigeria from 2020 to 2023.

[1][2][3][4] He previously served as permanent representative of Nigeria to the United Nations from 1990 to 1999, and minister of external affairs from 1984 to 1985.

Ibrahim Agboola Gambari was born on 24 November 1944 in Ilorin, Kwara State to a Fulani ruling class family.

In 1999, he was the President of UNICEF and later became UN Under Secretary-General and the first Special Adviser on Africa to the UN Secretary General Kofi Annan from 1999 to 2005.

He was the Under-Secretary-General of the United Nations for Political Affairs from 2005 to 2007 under Secretary-General's Kofi Annan and Ban Ki-moon.