Desmond Mpilo Tutu (7 October 1931 26 December 2021) was a South African Anglican bishop and theologian, known for his work as an anti-apartheid and human rights activist. He was Bishop of Johannesburg from 1985 to 1986 and then Archbishop of Cape Town from 1986 to 1996, in both cases being the first black African to hold the position. Theologically, he sought to fuse ideas from black theology with African theology.

Tutu was born of mixed Xhosa and Motswana heritage to a poor family in Klerksdorp, South Africa. Entering adulthood, he trained as a teacher and married Nomalizo Leah Tutu, with whom he had several children. In 1960, he was ordained as an Anglican priest and in 1962 moved to the United Kingdom to study theology at King's College London. In 1966 he returned to southern Africa, teaching at the Federal Theological Seminary and then the University of Botswana, Lesotho and Swaziland. In 1972, he became the Theological Education Fund's director for Africa, a position based in London but necessitating regular tours of the African continent. Back in southern Africa in 1975, he served first as dean of St Mary's Cathedral in Johannesburg and then as Bishop of Lesotho; from 1978 to 1985 he was general-secretary of the South African Council of Churches. He emerged as one of the most prominent opponents of South Africa's apartheid system of racial segregation and white minority rule. Although warning the National Party government that anger at apartheid would lead to racial violence, as an activist he stressed non-violent protest and foreign economic pressure to bring about universal suffrage.

In 1985, Tutu became Bishop of Johannesburg and in 1986 the Archbishop of Cape Town, the most senior position in southern Africa's Anglican hierarchy. In this position, he emphasised a consensus-building model of leadership and oversaw the introduction of female priests. Also in 1986, he became president of the All Africa Conference of Churches, resulting in further tours of the continent. After President F. W. de Klerk released the anti-apartheid activist Nelson Mandela from prison in 1990 and the pair led negotiations to end apartheid and introduce multi-racial democracy, Tutu assisted as a mediator between rival black factions. After the 1994 general election resulted in a coalition government headed by Mandela, the latter selected Tutu to chair the Truth and Reconciliation Commission to investigate past human rights abuses committed by both pro and anti-apartheid groups. Following apartheid's fall, Tutu campaigned for gay rights and spoke out on a wide range of subjects, among them his criticism of South African presidents Thabo Mbeki and Jacob Zuma, his opposition to the Iraq War, and describing Israel's treatment of Palestinians as apartheid. In 2010, he retired from public life.

As Tutu rose to prominence in the 1970s, different socio-economic groups and political classes held a wide range of views about him, from critical to admiring. He was popular among South Africa's black majority and was internationally praised for his work involving anti-apartheid activism, for which he won the Nobel Peace Prize and other international awards. He also compiled several books of his speeches and sermons.

Apartheid (, especially South African English: , Afrikaans: [aˈpartɦɛit]; transl. "separateness", lit. "aparthood") was a system of institutionalised racial segregation that existed in South Africa and South West Africa (now Namibia) from 1948 until the early 1990s. Apartheid was characterized by an authoritarian political culture based on baasskap (boss-hood or boss-ship), which ensured that South Africa was dominated politically, socially, and economically by the nation's minority white population. According to this system of social stratification, white citizens had the highest status, followed by Indians and Coloureds, then black Africans. The economic legacy and social effects of apartheid continue to the present day.Broadly speaking, apartheid was delineated into petty apartheid, which entailed the segregation of public facilities and social events, and grand apartheid, which dictated housing and employment opportunities by race. The first apartheid law was the Prohibition of Mixed Marriages Act, 1949, followed closely by the Immorality Amendment Act of 1950, which made it illegal for most South African citizens to marry or pursue sexual relationships across racial lines. The Population Registration Act, 1950 classified all South Africans into one of four racial groups based on appearance, known ancestry, socioeconomic status, and cultural lifestyle: "Black", "White", "Coloured", and "Indian", the last two of which included several sub-classifications. Places of residence were determined by racial classification. Between 1960 and 1983, 3.5 million black Africans were removed from their homes and forced into segregated neighbourhoods as a result of apartheid legislation, in some of the largest mass evictions in modern history. Most of these targeted removals were intended to restrict the black population to ten designated "tribal homelands", also known as bantustans, four of which became nominally independent states. The government announced that relocated persons would lose their South African citizenship as they were absorbed into the bantustans.Apartheid sparked significant international and domestic opposition, resulting in some of the most influential global social movements of the twentieth century. It was the target of frequent condemnation in the United Nations and brought about an extensive arms and trade embargo on South Africa. During the 1970s and 1980s, internal resistance to apartheid became increasingly militant, prompting brutal crackdowns by the National Party government and protracted sectarian violence that left thousands dead or in detention. Some reforms of the apartheid system were undertaken, including allowing for Indian and Coloured political representation in parliament, but these measures failed to appease most activist groups.Between 1987 and 1993, the National Party entered into bilateral negotiations with the African National Congress (ANC), the leading anti-apartheid political movement, for ending segregation and introducing majority rule. In 1990, prominent ANC figures such as Nelson Mandela were released from prison. Apartheid legislation was repealed on 17 June 1991, leading to multiracial elections in April 1994.