Sir Sydney Kentridge KCMG, QC (born 5 November 1922) is a South African-born former lawyer, judge and member of the English Bar. He practised law in South Africa and the United Kingdom from the 1940s until his retirement in 2013, and played a leading role in a number of the most significant political trials in apartheid-era South Africa, including the Treason Trial of Nelson Mandela and the 1978 inquest into the death of Stephen Biko.