Anna Kajumulo Tibaijuka (; born 12 October 1950) is a Tanzanian, CCM politician and Member of Parliament for Muleba South constituency since 2010.
She served as the Minister of Lands, Housing and Human Settlement Developments from 2010 to 2014.She is also a former under-secretary-general of the United Nations and executive director of the United Nations Human Settlements Programme (UN-HABITAT).
She was the second highest ranking African woman in the UN system until her resignation in 2010 to run for political office in Tanzania.