Irene Chirwa Mambilima (March 31, 1952 – June 20, 2021) was the Chief Justice of Zambia from 2015 until her death in 2021. She also served as Chairperson of the Electoral Commission of Zambia and presided over the 2006 and 2011 general elections and the January 2015 presidential by-election. She was part of several election observer missions including in Liberia, Kenya, Mozambique, and Seychelles. Her other international assignments included serving as Sessional Judge of the Supreme Court of The Gambia in 2003.  Mambilima sat on the International Board of the International Association of Women Judges (IAWJ) as a Director of the Africa Region. She was also a member of several professional associations including the Zambia Association of Women Judges, the Editorial Board Council of Law Reporting, the Child Fund (Zambia), Women in Law Southern Africa, and the Council of the Institution of Advanced Legal Education.