The Afrikaner Broederbond (AB) or simply the Broederbond was an exclusively Afrikaner Calvinist and male secret society in South Africa dedicated to the advancement of the Afrikaner people. It was founded by H. J. Klopper, H. W. van der Merwe, D. H. C. du Plessis and the Rev. Jozua Naudé in 1918 as Jong Zuid Afrika until 1920, when it was renamed the Broederbond. Its influence within South African political and social life came to a climax with the 1948-1994 rule of the white supremacist National Party and its policy of apartheid, which was largely developed and implemented by Broederbond members. Between 1948 and 1994, many prominent figures of Afrikaner political, cultural, and religious life, including every leader of the South African government, were members of the Afrikaner Broederbond.

Afrikaners are a Southern African ethnic group descended from predominantly Dutch settlers first arriving at the Cape of Good Hope in 1652. Until 1994, they dominated South Africa's politics as well as the country's commercial agricultural sector.