Thulisile Nomkhosi "Thuli" Madonsela (born 28 September 1962) is a South African advocate and professor of law, holding a chair in social justice at Stellenbosch University since January 2018. She served as the Public Protector of South Africa from 19 October 2009 to 14 October 2016. In 1996, she helped draft the final constitution of South Africa promulgated by then-President Nelson Mandela.