Haja Zainab Hawa Bangura (born 18 December 1959) is a Sierra Leonean politician and social activist.
She served as the second United Nations Special Representative on Sexual Violence in Conflict with the rank of Under-Secretary-General of the United Nations from 2012 to 2017, in succession to the first holder of the post, Margot Wallström.
In 2017 she was succeeded by Pramila Patten.In 2007, Bangura became Sierra Leone's foreign minister in the government of President Ernest Bai Koroma of the All People's Congress (APC) Party.
She was the second woman to serve in that post, following Shirley Gbujama who held that position from 1996 to 1997.
She served as Minister of Health and Sanitation from 2010 to 2012.