Mull Sebujja Katende is a Ugandan diplomat, who serves as Uganda's Ambassador to the United States of America, based in Washington, DC.

[2][3] In that capacity, he also represents his country, to the nations of United States, Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Jamaica,[4] Mexico, Paraguay,[5] Peru, Trinidad and Tobago, Uruguay and Venezuela.

[2] He previously served, for a period of nearly ten years (2008–2017), as the Ambassador of Uganda to Ethiopia and Djibouti, based in Addis Ababa, with concurrent accreditation as Permanent Representative to the African Union, the United Nations Economic Commission for Africa and the Inter-Governmental Authority on Development.

He is a member of the Ugandan diplomatic team that negotiated the reinstatement of the East African Community in November 1999.

He then served for nine years, as Uganda's ambassador based in Addis Ababa, with accreditation to Ethiopia, Djibouti, the African Union, UNECA and IGAD, an eight-country trade bloc comprising Djibouti, Eritrea, Ethiopia, Kenya, Somalia, South Sudan, Sudan, and Uganda.