The Treason Trial was a trial in Johannesburg in which 156 people, including Nelson Mandela, were arrested in a raid and accused of treason in South Africa in 1956.

Nelson Rolihlahla Mandela was a South African anti-apartheid activist, politician, and statesman who served as the first president of South Africa from 1994 to 1999. He was the country's first black head of state and the first elected in a fully representative democratic election. His government focused on dismantling the legacy of apartheid by fostering racial reconciliation. Ideologically an African nationalist and socialist, he served as the president of the African National Congress (ANC) party from 1991 to 1997.