1900s
- 1917
- 27 October, Oliver Reginald Tambo (OR) is born in the village of Kantolo, Mbizana, in the Mpondoland (eQawukeni), region of the Eastern Cape. His mother, Julia, was the third wife of Mzimeni Tambo, son of a farmer and assistant salesperson at a local trading store.
1920s
- 1928
- April, Tambo and his brother, Alan, enrolled at the Anglican Holy Cross missionary school at Flagstaff in the Eastern Cape.
1930s
- 1933
- Tambo and some friends form the Bizana Students Association (BSA). He was elected Secretary
- 1936
- November, Writes his Junior Certificate (JC) examination, along with all black and white students in the then Transvaal (now Gauteng) and passes the JC examination with a first class
- 1938
- December, Enters for the matriculation examinations which he achieves with a first class pass
1940s
- 1942
- Is unanimously elected as Chairperson of the Students' Committee of his residence, Beda Hall, University of Fort Hare.
- Graduates with a BSc degree and but is expelled for political activity just as he embarks on a Diploma in Higher Education.
- Meets Walter Sisulu in Johannesburg
- 1943–1947
- Tambo taught Mathematics and Physics at St Peter’s Secondary School in Rosettenville, Johannesburg
- 1944
- September, Under the leadership of Anton Lembede, a group of young people form the ANC Youth League (ANCYL). At its official inauguration , OR is elected as its secretary
- 1947
- Tambo becomes a member of the National Executive Committee (NEC) of the ANC
- 1948
- Tambo serves his law articles with a company of lawyers, Max Kramer and Tuch.
- 1949
- Tuch and OR joined the law company of Solomon Kowalsky.
- 1950s
- 1951
- 24 July, Qualifies as an attorney
- 1952
- Establishes the first Black legal partnership with Nelson Mandela
- The state prevents Walter Sisulu from taking an active part in ANC affairs, Tambo becomes the Secretary General of the organisation
- 1954
- Receives restriction orders from the State
- 1955
- Tambo is engaged to Adelaide Tsukhudu, a nurse
- 1956
- Tambo comes to live in Wattville, Benoni
- 6 December, Two days before the Bishop of Johannesburg was due to prepare him for ordination as a priest; Tambo is arrested along with 155 others on charges of high treason
- 1959
- Heads the ANC’s Constitutional Commission
1960s
- 1960
- Tambo is detained in South West Africa (Namibia). He was there to defend activists who were arrested for political activity
- 27 March, Tambo goes into exile. He is driven by Ronald Segal , the editor of the liberal journal, Africa South, across the Bechuanaland (now Botswana) border.
- 1 May, Tambo’s first visit to northern Europe was to Denmark, at the invitation of the Prime Minister
- 15 September, Adelaide and the children land in London.
- 1961
- 5 August, Delivers a speech, Racial Problems in South Africa, at the Second Pan-African Youth Seminar in Dar Es Salaam.
- 1962
- January, Meets Mandela and Joe Matthews in Dar es Salaam
- Thabo Mbeki meets Tambo in Dar es Salaam, after Duma Nokwe and Govan Mbeki instruct him, on behalf of the ANC, to leave South Africa and go into exile
- 1 May, Addresses the annual gathering of the Swedish Social Democrats
- August, The Swedish Prime Minister Tage Erlander officially receives Tambo
- 1962
- October, An ANC consultative meeting in Lobatse, Botswana confirms an ANC’s mandate, that OR was to head the ANC’s diplomatic mission and to communicate to the world the political situation in South Africa.
- 1963
- Visits the USSR and China to gain support from these two countries.
- 8 October, Addresses the United Nations General Assembly Special Political Committee appealing for the freedom of all South Africans
- 29 October, Delivers a Statement at the Meeting of the Special Political Committee of the United Nations General Assembly: United Nations must take Action to Destroy Apartheid
- Delivers a speech: Comments and Observations on Proposals for a United Nations Security Council Resolution on Apartheid
- 1964
- Addresses the UN Special Committee on Apartheid on the situation in South Africa.
- Presents a paper entitled: Apartheid - the Indictment
- 12 June Gives a press release in Dar es Salaam
- December Gives a press release
- Delivers a New Year Message to U Thant, Secretary-General of the United Nations
- 1965
- Sets up military camps in Tanzania and Zambia.
- 1967
- Following the death of Chief Albert Luthuli, Tambo becomes the Acting President of the ANC
- 1968
- June Presents a paper: Present Stage of the Struggle against Apartheid in South Africa in Stockholm
- 18 June Presents a statement Need for New Level of International Action against Apartheid in Stockholm
- 26 June Delivers a Message to the People of South Africa
- 29 June Writes a Letter to U Thant, Secretary-General of the United Nations
- 13 - 16 September Delivers a joint statement We Shall Win with leaders of Liberation Movements at the fifth Session of the Assembly of Heads of State and Government of the Organisation of African Unityin Algiers
- Tambo accompanies the Luthuli Detachment, an MK unit, on reconnaissance expeditions to the Zambesi River, sleeping in the open with the group
- 1969
- March Issues a directive Concerning the Nature of the Forthcoming ANC Consultative Conference in Morogoro, Tanzania
- 25 April – 1 May Delivers a public statement: Intensify the Revolution at the 'Morogoro Conference', Morogoro, Tanzania
- 26 June Delivers a message over Radio Tanzannia to the people of South Africa: A Call to Action
- 16 December Delivers a broadcast Capture the Citadel on the eighth anniversary of the formation of Umkhonto we Sizwe
1970s
- 1971
- 1 January Delivers a New Year Message to the ANC External Mission
- January Delivers a message: Bitter Battles to Cometo the meeting of the Council of the Afro-Asian Peoples' Solidarity Organisation in Tripoli
- 18 March Delivers an address, Apartheid - a Threat to Africa's Survival, under the auspices of the Nigerian National Committee on Apartheid in Lagos
- 16 December Delivers a statement, Mobilise Our Black Power, to the people of South Africa on the 10th anniversary of Umkhonto we Sizwe
- 1972
- 8 January Delivers a speech on the sixtieth anniversary of the ANC in Lusaka
- 1973
- 2 April Delivers a tribute to the United Nations Special Committee Against Apartheid
- 9 April Delivers a statement, Mobilise World Support for African Liberation Struggle, on behalf of Liberation Movements, at the International Conference of Experts for the Support of Victims of Colonialism and Apartheid in Southern Africa, Oslo
- 11 April Delivers a statement, Increase Assistance to Liberation Movements at the International Conference of Experts for the Support of Victims of Colonialism and Apartheid in Southern Africa
- 11 April Delivers a statement, Move from Condemnation to Confrontation of Apartheid and Colonialism in Committee II of the International Conference of Experts for the Support of Victims of Colonialism and Apartheid in Southern Africa, Oslo
- 20 June Delivers a speech at meeting to commemorate South Africa Freedom Day and to condemn the 600-year alliance between Britain and Portugal
- 11 July Delivers a statement, Prisoners of Apartheid at a Press Conference in Addis Ababa
- Delivers an address, Black Reaction to Apartheid, 1948-1973 to the annual meeting of the African Studies Association in Syracuse, New York
- December Delivers a Christmas and New Year Message, distributed illegally in South Africa
- 1974
- 26 June Delivers a Message to the People of South Africa
- July Delivers a Message on the Twentieth Anniversary of the Tanganyika African National Union
- Writes a Letter to the OAU Secretary-General, Mr. William Eteki Mboumoua
- 1975
- April Delivers a Presidential Address to the Extended Meeting of the National Executive Committee of the ANC
- 7 – 10 April Delivers a Statement at the Ninth Extraordinary Session of the Council of Ministers of the Organisation of African Unity, Dar Es Salaam
- 31 October Delivers a Statement by the ANC on the Invasion of Angola by South African Troops
- 1976
- Following the Soweto student rebellion, Tambo approaches the international community for assistance. He also approaches the Tanzanian Government for a piece of land to establish a school for exiles coming to the camps.
- March Racists Humiliated - Tambo interviewed by Michael Wolfers for Sechaba
- August Delivers a message to the People of South Africa
- 26 October Delivers a statement, Support our People until Power is Restored to Them at the plenary meeting of the United Nations General Assembly in New York
- 1977
- Addresses the UN Security Council, the first head of a liberation movement to do so
- 8 May Delivers a speech at the Funeral of M.P. Naicker in London
- Tambo interviewed in Luanda after Summit Meeting of Presidents of Frontline States and Southern African Liberation Movements
- 23 August Delivers a statement, Crucial Stage in the Struggle for Liberation of Southern Africa at the World Conference for Action against Apartheid in Lagos, Nigeria
- December Delivers an address, A Future Free of Exploitationto the First Congress of MPLA in Luanda
- 1978
- An ANC delegation, headed by Tambo visits Vietnam, where they attended numerous lectures and meets with activists.
- Addresses the first conference of the European Economic Community (EEC as it was then known) in Ireland
- February Gives an interview South Africa After Soweto to World Marxist Review
- 1 March Delivers a statement, We Shall Win, at the Meeting of the United Nations Special Committee against Apartheid to launch the International Anti-Apartheid year in New York
- 26 May Delivers an oration at the Funeral of Moses Kotane
- 1979
- 8 January Delivers a message to the People of South Africa on the 67th anniversary of the ANC
- 26 January Delivers a statement at the Freedom Rally Organised by the Irish Anti-Apartheid Movement in Dublin
- 27 January Delivers a statement at the International Conference on the EEC and South Africa in Dublin
- 13 February Writes a letter to Ayatollah Khomeini
- 10 April Delivers an address, The Spirit of Bandung, to the International Conference in Support of the Liberation Movements of Southern Africa and in Support of the Frontline States, in Lusaka, 10 April
- 21 April Delivers a speech on the Occasion of the Celebration of the Twenty-First Anniversary of the United Nations Economic Commission for Africa, in Lusaka
- 3 September Delivers a speech, on Behalf of the National Liberation Movements, at the Opening Session of the Sixth Conference of Heads of State or Government of Non-Aligned Countries, in Havana, Cuba
- 3 - 9 September Delivers a statement at the Sixth Conference of heads of State or Government of Non-Aligned Countries in Havana, Cuba
- 5 November Delivers a press statement
1980s
- 1980
- 2 January Gives a press conference, introducing Alexandre Moumbaris, Stephen Lee and Timothy Jenkin who escaped from prison
- 8 January Delivers a message to the People of South Africa on the 68th Anniversary of the ANC
- January Tambo interviewed by The New Times in Moscow
- Tambo interviewed by New African in London
- March Writes an article, Racism in Isolation for World Marxist Review
- 18 March Delivers a statement, Forward to a People's Government
- April Delivers a speech, In the Belly of the beast, at conference of the International Committee against Apartheid, Racism and Colonialism in Stockholm
- 10 June Gives an introduction to a message from Nelson Mandela, smuggled out of prison.
- 1984
- 8 January Delivers message, Dream of Total Liberation of Africa is in Sight, of the National Executive Committee of the ANC on the 72nd Anniversary of ANC
- 21 March Gives a press conference in London
- 21 March Delivers an address to the Anti-Racist Day Meeting of the Greater London Council
- May Delivers a speech, We are a Force, at Solomon Mahlangu Freedom College in Mazimbu, Tanzania
- 21 May Writes an open letter to Archbishop Trevor Huddleston in an appeal to the British People to oppose the visit of P.W. Botha
- 16 June Delivers a statement on June 16
- 26 June Delivers a message to Archbishop Trevor Huddleston, President, Anti-Apartheid Movement, on the 25th Anniversary of its founding
- 23 August Delivers a statement, The Struggle Continues and Grows More Intense
- 4 September Delivers an address at Conference on Southern Africa of the Socialist International and the Socialist Group of the European Parliament with the Frontline States, ANC and SWAPO in Arusha
- Tambo interviewed with Mayibuye on the current situation in South Africa and Southern Africa in general.
- 10 October Delivers a radio broadcast, Make South Africa Ungovernable Radio Freedom
- 14 November Delivers a statement to the 20th session of the assembly of Heads of State and Government of the Organisation of African Unity in Addis Ababa
- 16 November Delivers a statement to the press in Addis Ababa
- 1985
- 8 January Delivers a message, Render South Africa Ungovernable! of the National Executive Committee of the ANC on the 73rd Anniversary of ANC
- January O. R. Tambo interviewed by RIXAKA
- June, Tambo chairs the ANC’s Kabwe Conference.
- 16 June Gives an opening statement at the Second National Consultative Conference of the ANC in Kabwe, Zambia
- June Delivers a Political Report of the National Executive Committee to the National Consultative Conference of the ANC, in Kabwe, Zambia
- 25 June Delivers a Communique of the Second National Consultative Conference of the ANC at a Press Conference in Lusaka
- 25 June Delivers a press conference in Lusaka
- July Delivers a message to the World Festival of Youth and Students in Moscow.
- 19 July Delivers an address to the 21st Session of the Assembly of Heads of State and Government of the OAU by O.R. Tambo, Addis Ababa, 19 July 1985
- 22 July Delivers an address to the Nation on Radio Freedom
- 16 August Delivers an ANC press Statement in Lusaka.
- October Tambo interviewed by Anthony Heard.
- October, Following an address to the Foreign Affairs Committee of the House of Commons in London, the United Kingdom, as part of the Commonwealth, sent an Eminent Persons Group to investigate the situation in the country
- At a press conference during the UN Conference on Women, Tambo stressed that the ANC’s liberation struggle would not be complete until the women of South Africa were free
- 29 October Gives evidence before the Foreign Affairs Committee of the House of Commons, in London.
- 10 November Writes an article, Botha's British Allies for the Observer, London.
- Tambo and the ANC meet a high-powered delegation of the foremost captains of industry from South Africa.
- Unveils a statue erected by the Greater London Council on the South Bank, London in honour of Nelson Mandela
- 1986
- 8 January. Delivers message 'Attack, Advance, Give the Enemy No Quarter!' of the National Executive Committee of the ANC on the 74th Anniversary of the ANC.
- Before February Tambo interviewed by Radio Freedom on visits of multi-national corporations to the ANC.
- 21 February Delivers a Statement at the Swedish People's Parliament Against Apartheid in Stockholm
- 29 March 1986 Statement at the Funeral of Moses Mbheki Mabhida in Maputo
- April, Meets with the German Foreign Minister, Hans Dietrich Genscher for talks in Bonn, Germany
- 5 May Delivers "Racism Apartheid and a New World Order": Speech in Acceptance of the Third World Prize on Behalf of Nelson and Winnie Mandela in Kuala Lampur, Malaysia
- 9 May "We are of the World and the World is with Us" Address on Receiving the Degree of Doctor of Laws Honoris Causa from the Jawaharlal Nehru University, New Delhi
- 27 May Delivers Joint Communique of the Meeting of the National African Federated Chambers of Commerce and the ANC Lusaka
- 16 June Delivers "The Count-Down has Started": Statement on the Tenth Anniversary of the Soweto Uprising
- 16 June Delivers Victory is Within our Grasp: Statement at the World Conference on Sanctions against Racist South Africa UNESCO House, Paris
- 19 June Delivers Statement at the International Labour Conference Geneva
- 23 June Delivers "We have Decided to Liberate Ourselves" Address to the Royal Commonwealth Society London
- 21 July Writes a Letter to Sir Geoffrey Howe United Kingdom Secretary of State for Foreign and Commonwealth Affairs
- 1 - 6 September Delivers a Statement at the Eighth Conference of Heads of State or Government of Non-Aligned Countries
- 22 October Delivers a message to Frelimo Central Committee on the Death of Samora Machel
- 15 December Delivers a statement of Acceptance of the Ho Chi Minh Award Bestowed on the ANC by the World Peace Council in Luanda
- Tambo convenes the first meeting of the ANC’s Constitutional Committee in Lusaka, which Jack Simons heads
- 16 December "Umkhonto we Sizwe - Born of the People" Statement of the National Executive Comittee of the ANC on the 25th Anniversary of the Formation of Umkhonto we Sizwe
- 1987
- 21 January, Tambo and Allan Boesak of the United Democratic Front (UDF) appear for the first time together in public at the Riverside Church in New York, America, at the Olof Palme Memorial Lecture on Disarmament and Development.
- 28 May, Tambo speaks at the Canon Collins Memorial Lecture in London calling upon all to support the struggle in the country by isolating apartheid in every facet of life
- September, At the International Convention for the Rights of Children Conference, in Harare, dealing with the imprisonment and torture of children in South Africa, Tambo opens his speech by reading a poem by South African poet, Ingrid Jonker
- Heads a top-secret mission, Operation Vula, a covert project.
- November 4-5 Delivers a speech At The Meeting Of Representatives Of The Parties And Movements Participating In The Celebration Of The 70th Anniversary Of The "Great October Socialist Revolution"
- 11 November Delivers a speech on the Occasion of ohe Award of an Honorary Doctorate to Nelson Mandela by The Karl Marx University of the German Democratic Republic
- 1 December Delivers an Address at the Opening Session of the ANC Conference "Peoples Of The World United Against Apartheid, For A Democratic South Africa"
- 4 December Delivers a Closing Speech at the ANC Conference "Peoples Of The World United Against Apartheid, For A Democratic South Africa"
- 1988
- 1-5 March Delivers a Statement at the Symposium on the Survival and Development of Children in the Frontline States and Southern Africa
- 13 May Delivers a Statement at the 50th Session of the OAU Coordinating Committee for the Liberation Of Africa
- June Call for the Observance of the 70th Birthday of Nelson Mandela
- 11 June Delivers a Statement at the Launch of the "Nelson Mandela: Freedom at 70" Campaign
- June, Tambo is the guest of honour at the Nelson Mandela 70th Birthday Tribute at Wembley Stadium, London, organised by the British Anti Apartheid Movement
- June Delivers "Peace and Development in our Region" Speech at "War on Want" Conference
- August Delivers a Speech at the Tenth General Conference of the United National Independence Party
- 1 - 2 December Delivers a Statement, on Behalf of the Southern African Liberation Movements, at the Closing Session of the Seventh Summit Meeting of the Preferential Trade Area for Eastern and Southern African States
- At the Scottish Anti Apartheid Movement’s rally, Tambo is invited to launch their Glasgow to London march calling for the release of Nelson Mandela
- 1989
- 8 January Delivers a message of the National Executive Committee of the ANC on the 77th Anniversary of the ANC
- 12 January Delivers a Statement at the 19th African-American Conference
- 15 February Delivers a Statement at the Conference of The Socialist International and Frontline States on Southern Africa
- April Delivers a Message to the Seventh Congress of the South African Communist Party
- 20 June Delivers a Statement to the Ordinary Congress of the Socialist International, Stockholm
- 30 June Delevers a Press Statement concerning the Five-Year Plan presented by F.W. De Klerk to the National Party Conference
- 24 – 26 July Delivers a Statement at the 25th Session of the Assembly of Heads of State and Government of the Organisation of African Unity
- 29 October Delevers a Message to the Soweto Rally to Welcome Released Leaders
- Suffers a severe health fall back, leading him to lose his speech due to a stroke.
1990s
- 1990
- 2 February Delivers a statement with other ANC leaders visiting Sweden.
- The London Borough of Haringey confers the Freedom of the Borough on Tambo – the first ever recipient
- March, Tambo meets Nelson Mandela for the first time in Sweden, after nearly three decades
- 9 August Delivers a message to the rally to relaunch the ANC Women's Leaguein Durban.
- December, The entire Tambo family flies back to South Africa
- 14 December Delivers an opening address to the ANC National Consultative Conference in Johannesburg.
- 16 December Delivers a speech to the ANC Rally at Soccer City in Johannesburg,
- 1991
- 8 January Delivers an introductory statement on the presentation of the statement of the National Executive Committee of the ANC on the 79th Anniversary of the ANC.
- 24 May Gives a speech at the final conference of International Defence and Aid Fund for Southern Africa in London.
- 2 July Delivers an opening address to the ANC’s 48th National Conference in Durban.
- 19 October Delivers a speech on the occasion of installation as the Chancellor of the University of Fort Hare and on being awarded the Honorary Degree of Doctor of Laws.
- Installed as Chancellor of the University of Fort Hare
- 1993
- 19 February Delivers an opening speech at the International Solidarity Conference, on the theme "From Apartheid to Peace, Democracy and Development" in Johannesburg.
- 23 April, Tambo passes away in Johannesburg
- 30 April, Father Trevor Huddleston, an old friend, delivers an address at the Requiem Mass for Tambo at St Mary’s Cathedral, Johannesburg
- 2 May, Tambo’s funeral takes place in Johannesburg
2000s
- 2006
- 26 October, The inaugural lecture of the Oliver Tambo Lecture Series takes place in Glasgow, Scotland
- 27 October, Johannesburg Airport is renamed the OR Tambo International Airport
- 2011
- 1 October, The first-ever Oliver and Adelaide Tambo Liberation Walk took place in Ekurhuleni
- 25 October, President Jacob Zuma officially launches the Oliver and Adelaide Tambo Foundation in Johannesburg