Adriaan Johannes Vlok (born 11 December 1937) is a South African politician. He was Minister of Law and Order in South Africa from 1986 to 1991 in the final years of the apartheid era. Facing increasingly intense opposition and political unrest in this period, the South African government – through the State Security Council of which Vlok was a member – planned and implemented drastic repressive measures, including hit squads, carrying out bombings and assassination of anti-apartheid activists.