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The following lists events that happened during 1984 in South Africa.
Incumbents
- State President:
- Marais Viljoen (until 3 September).
- P.W. Botha (from 14 September).
- 30 – Patrick McCall of the Stander gang is killed by police in a raid on the gang's hide-out in Houghton, Johannesburg.
;February
- 3 – A bomb destroys the offices of the Ciskei consulate in Durban.
- 23 – An Escom installation in Georgetown is slightly damaged by an explosion.
- 29 – Two bombs explode at Mandini, one at a sub-station and the other at the police station.
;March
- 11 – The Mobil fuel depot in Ermelo is rocked by four explosions and five storage tanks are destroyed.
- 12 – During a skirmish with insurgents, two policemen are seriously injured.
- 16 – South Africa and Mozambique sign the Nkomati Accord, a non-aggression treaty, at Komatipoort.
- 23 – Dorothy Nyembe is released from Kroonstad Prison after serving 15 years.
;April
- 3 – The African National Congress denies responsibility after a car bomb explodes on the Victoria Embankment, Durban, killing three and injuring twenty.
- 5 – The Transkei consulate in Botshabelo is destroyed by a bomb.
- An insurgent is killed at De Deur.
;May
- 2 – South Africa, Mozambique and Portugal sign an agreement on electricity supply from the Cahora Bassa dam.
- 5 – Over 7,000 people attend an Afrikaner Volkswag rally in Pretoria.
- 12 – A bomb explodes at the Trust Bank in Durban.
- 13 – The Mobil Oil Refinery in Durban comes under RPG-7 attack by Umkhonto we Sizwe insurgents who are all killed afterwards in a running battle with police.
- 16 – Outside the Jabulani Police station in Soweto an explosion destroys two private vehicles belonging to policemen.
- 18 – The railway line near Lenasia is damaged by an explosion.
- 29 – Prime Minister P.W. Botha and minister of foreign affairs Pik Botha visit Austria, Belgium, France, Great Britain, Italy, Portugal, Switzerland and West Germany.
- Mutineers systematically kill most camp administration members at Umkhonto we Sizwe's Pango training camp in Angola.
;June
- 21 – An explosion damages a sub-station in Berea, Durban and disrupts electricity supply.
- 28 – Jeannette Schoon and her six-year-old daughter Katryn are killed by a letter bomb at Lubango, Angola.
;July
- 9 – South Africa signs the amendment of the International Convention for the Conservation of Atlantic Tunas.
- 12 – One policeman is killed and one is injured when their vehicle is attacked in Jabulani.
- 28 – The South African Railways Police charge office in KwaMashu, Durban is attacked with hand grenades.
;August
- 3 – A guerrilla is killed in the Ellisras area.
- 7 – Tshabalala Dry Cleaners in Soweto is extensively damaged by Umkhonto we Sizwe.
- 7 – An Escom sub-station is destroyed in Glenmore, Durban.
- 12 – The Department of Internal Affairs of Johannesburg is hit by an explosion that causes minor damage.
- 16 – Two Limpet mines destroy two floors of the South African Police HQ, Soweto East in Roodepoort, injuring the District Commander, four policemen and two civilians.
- 17 – A guerrilla is killed while resisting arrest in Mapetla.
- 22 – Elections to the new House of Representatives are held.
- 23 – Explosions destroy 4th floor offices of the government in a building in Booysens, Johannesburg.
- 24 – A bomb explodes in Anchor Life Building in Johannesburg, destroying the South African Railways Police regional offices and the Department of Internal Affairs offices.
- 22 – Elections to the new House of Delegates are held.
;September
- 3 – A limpet mine placed by Mo Shaik explodes at the Department of Internal Affairs in Johannesburg.
- 3 – A violent march in the Vaal Triangle inaugurates a prolonged township uprising.
- 5 – An explosion destroys an Escom sub-station at Rustenburg and disrupts power to Rustenburg and a large area of Bophutatswana.
- 13 – A Limpet mine causes damage to a Durban sub-station.
- 14 – The position of Prime Minister is abolished.
- 14 – P.W. Botha is inaugurated as the first executive State President of South Africa.
- The first of twenty-five 25 kV AC Class 7E3, Series 2 electric locomotives.
Sports
Athletics
- 31 March – Ernest Seleke wins his first national title in the men's marathon, clocking 2:09:41 in Port Elizabeth.
- 11 August – Barefoot runner Zola Budd and Mary Decker of the United States collide in the Olympic 3,000 meters final and neither finish as medallist.
Motorsport
- 7 April – The South African Grand Prix takes place at Kyalami.
