List of Heads of State 1966

Overview
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Africa

Egypt
- Head of State: President Gamal Abdel Nasser ( 1954 , 1954–1970) (until 1956 Chairman of the Revolutionary Command Council) (1954, 1954–1958, 1967–1970 Head of Government)
- Head of Government:
  - Prime Minister Zakaria Mohieddin (1965–10 September 1966)
  - Prime Minister Muhammad Sedki Sulayman (September 10, 1966–1967)

Algeria
- Head of State and Government: President of the Revolutionary Council Houari Boumedienne (1965–1978) (President from 1976)

Ethiopia
- Head of State: Emperor Haile Selassie (1930–1974) (1936–1941 in exile)
- Head of Government: Prime Minister Aklilu Habte-Wold (1961–1974)

Botswana (independent since September 30, 1966)
- Head of State and Government: President Seretse Khama (September 30, 1966–1980)

Kingdom of Burundi / Republic of Burundi
- Head of State:
  - King Mwambutsa IV. Bangiriceng (1962– July 8, 1966)
  - King Ntare V. Ndizeye (July 8, 1966– November 28, 1966)
  - President Michel Micombero (November 28, 1966–1976) (Prime Minister 1966)
- Head of Government:
  - Prime Minister Léopold Biha (1965–8 July 1966)
  - Prime Minister Michel Micombero (July 8, 1966– November 28, 1966) (President 1966–1976)

Dahomey (from 1975 Benin )
- Head of State and Government: Chairman of the Provisional Government Christophe Soglo ( 1963–1964 , 1965–1967)

Ivory Coast
- Head of State and Government: President Félix Houphouët-Boigny (1960–1993)

Gabon
- Head of State and Government: President Léon M'ba ( 1960–1964 , 1964–1967) (1960–1961 Prime Minister)

Gambia
- Head of State: Queen Elizabeth II (1965–1970)
  - Governor General:
    - John Warburton Paul (1965-9 February 1966)
    - Farimang Singhateh (February 9, 1966–1970)
- Head of Government: Prime Minister Dawda Jawara (1965–1970) (1970–1994 President)

Ghana
- Head of State and Government:
  - President Kwame Nkrumah (1960–24 February 1966) (1957–1960 Prime Minister)
  - Chairman of the National Liberation Council Joseph Arthur Ankrah (February 24, 1966–1969)

Guinea
- Head of State and Government: President Ahmed Sékou Touré (1958–1984)

Cameroon
- Head of State and Government: President Ahmadou Ahidjo (1960–1982)

Kenya
- Head of State and Government: President Jomo Kenyatta (1964–1978) (Prime Minister 1963–1964)

Congo-Brazzaville (1970–1992 People's Republic of the Congo ; from 1992 Republic of the Congo )
- Head of State: President Alphonse Massemba-Débat (1963–1968) (1963 Prime Minister)
- Head of Government:
  - Prime Minister Pascal Lissouba (1963–15 April 1966) (1992–1997 President)
  - Prime Minister Edouard Ambroise Noumazalaye (May 6, 1966–1968)

Democratic Republic of the Congo (until 1964 Congo-Léopoldville , 1971–1997 Zaire )
- Head of State: President Joseph-Désiré Mobutu (1965–1997)
- Head of Government: Prime Minister Léonard Mulamba (1965–26 October 1966) (office abolished in 1966)

Lesotho (independent since October 4, 1966)
- Head of State: King Moshoeshoe II (October 4, 1966–1970, 1970–1990, 1995–1996 )
- Head of Government: Prime Minister Leabua Jonathan (October 4, 1966–1986) (1970 Head of State)

Liberia
- Head of State or Government: President William S. Tubman (1944–1971)

Libya
- Head of State: King Idris (1951–1969)
- Head of Government: Prime Minister Husain Maziq (1965–1967)

Madagascar
- Head of State and Government: President Philibert Tsiranana (1960–1972)

Malawi (republic since July 6, 1966)
- Head of State: Queen Elizabeth II (1964–6 July 1966)
- President Hastings Kamuzu Banda (July 6, 1966–1994) (Prime Minister 1964–1966)
  - Governor-General: Glyn Smallwood Jones (1964– July 6, 1966)
- Head of Government: Prime Minister Hastings Kamuzu Banda (1964–6 July 1966) (1966–1994 President)

Mali
- Head of State and Government: President Modibo Keïta (1960–1968)

Morocco
- Head of State and Government: King Hassan II. (1961–1999)

Mauritania
- Head of State and Government: President Moktar Ould Daddah (1960–1978)

Niger
- Head of State and Government: President Hamani Diori (1960–1974)

Nigeria

Head of State:

President Nnamdi Azikiwe (1963– January 16, 1966) (1960–1963 Governor General)

President Johnson Aguiyi-Ironsi (January 16, 1966– July 29, 1966)

President Yakubu Gowon (Aug. 1, 1966–1975)

Head of Government: Prime Minister Abubakar Tafawa Balewa (1960–15 January 1966)

Upper Volta (from 1984 Burkina Faso )
- Head of State and Government:
  - President Maurice Yaméogo (1960–4 January 1966)
  - President Sangoulé Lamizana (January 4, 1966–1980)

Rhodesia (not internationally recognized) (since 1980 Zimbabwe)
- Head of State: Queen Elizabeth II (1965–1970) (did not accept title)
  - Clifford Dupont Administration Officer (1965–1970) (1970–1975 President)
- Head of Government: Prime Minister Ian Smith (1965–1979)

Rwanda
- Head of State and Government: President Grégoire Kayibanda (1962–1973)

Zambia
- Head of State or Government: President Kenneth Kaunda (1964–1991)

Senegal
- Head of State and Government: President Léopold Sédar Senghor (1960–1980)

Sierra Leone
- Head of State: Queen Elizabeth II (1961–1971)
  - Governor General : Henry Josiah Lightfoot Boston (1962–1968)
- Head of Government: Prime Minister Albert Margai (1964–1967)

Somalia
- Head of State: President Aden Abdullah Osman Daar (1960–1967) (1967–1969 President)
- Head of Government: Prime Minister Abdirizak Haji Hussein (1964–1967)

South Africa
- Head of State: President Charles Robberts Swart (1961–1967) (1960–1961 Governor General)
- Head of Government:
  - Prime Minister Hendrik Frensch Verwoerd (1958–6 September 1966)
  - Prime Minister Theophilus E. Dönges (September 6, 1966– September 13, 1966)
  - Prime Minister Balthazar Johannes Vorster (September 13, 1966–1978) (President 1978–1979)

Sudan
- Head of State: President of the Committee on Sovereignty : Ismail al-Azhari (1965–1969)
- Head of Government:
  - Prime Minister Sadiq al-Mahdi (1965–27 July 1966, 1967–1969 )
  - Prime Minister Sadiq al-Mahdi (July 27, 1966–1967)

Tanzania
- Head of State and Government: President Julius Nyerere (1962–1985) (Prime Minister 1961–1962)

Togo
- Head of State and Government: President Nicolas Grunitzky (1963–1967)

Chad
- Head of State and Government: François Tombalbaye (1960–1975)

Tunisia
- Head of State and Government: President Habib Bourguiba (1957–1987) (1956–1957 Prime Minister)

Uganda
- Head of State:
  - President Edward Mutesa (1963– March 2, 1966)
  - President Milton Obote (March 2, 1966–1971, 1980–1985 ) (Prime Minister 1962–1966)
- Head of Government: Prime Minister Milton Obote (1962–15 April 1966) (1966–1971, 1980–1985 President)

Central African Republic
- Head of State and Government:
  - President David Dacko (1960–1 January 1966, 1979–1981 )
  - President Jean-Bédel Bokassa (January 1, 1966–1979) (Kaiser from 1976)

America

North America

Canada
- Head of State: Queen Elizabeth II (since 1952)
  - Governor General : Georges Vanier (1959–1967)
- Head of Government: Prime Minister Lester Pearson (1963–1968)

Mexico
- Head of State and Government: President Gustavo Díaz Ordaz (1964–1970)

United States of America
- Head of State or Government: President Lyndon B. Johnson (1963–1969)

Central America

Barbados (November 30, 1966 independence)
- Head of State: Queen Elizabeth II (since November 30, 1966)
  - Governor General John Montague Stow (November 30, 1966–1967)
- Head of Government: Prime Minister Errol Walton Barrow (November 30, 1966–1976, 1986–1987 )

Costa Rica
- Head of State and Government:
  - President Francisco José Orlich Bolmarcich (1962– May 8, 1966)
  - President José Joaquín Trejos Fernández (May 8, 1966–1970)

Dominican Republic
- Head of State and Government:
  - President Héctor García Godoy (1965–1 July 1966) (acting)
  - President Joaquín Balaguer ( 1950–1962 , July 1, 1966–1978, 1986–1996 )

El Salvador
- Head of State and Government: President Julio Adalberto Rivera Carballo (1962–1967)

Guatemala
- Head of State and Government:
  - President Alfredo Enrique Peralta Azurdia (1963– July 1, 1966)
  - President Julio César Méndez Montenegro (July 1, 1966–1970)

Haiti
- Head of State and Government: President François Duvalier (1957–1971)

Honduras
- Head of State and Government: President Oswaldo López Arellano (1963–1971, 1972–1975 ) (1956–1957 member of the military government council)

Jamaica
- Head of State: Queen Elizabeth II (since 1962)
  - Governor General : Clifford Campbell (1962–1973)
- Head of Government: Prime Minister Alexander Bustamante (1962–1967)

Cuba
- Head of State: President Osvaldo Dorticós Torrado (1959–1976)
- Head of Government: Prime Minister Fidel Castro (1959–2008) (1976–2008 President of the Council of State and President of the Council of Ministers)

Nicaragua
Head of State and Government:

President René Schick Gutiérrez (1963–3 August 1966)

President Orlando Montenegro Medrano (August 3, 1966– August 4, 1966) ( Acting )

President Lorenzo Guerrero Gutiérrez (August 4, 1966–1967)

Panama
- Head of State and Government: President Marco Aurelio Robles Méndez (1964–1968)

Trinidad and Tobago
- Head of State: Queen Elizabeth II (1952–1976)
  - Governor General : Solomon Hochoy (1962–1972)
- Head of Government: Prime Minister Eric Eustace Williams (1962–1981)

South America

Argentina
Head of State and Government:

President Arturo Umberto Illia (1963–28 June 1966)

Revolutionary junta Pascual Ángel Pistarini , Benigno Ignacio Marcelino Varela Barnadou , Adolfo Teodoro Álvarez Melendi (June 28, 1966– June 29, 1966)

President Juan Carlos Onganía (June 29, 1966–1970) (de facto)

Bolivia
- Head of State and Government:
  - Co-chairman of the military junta René Barrientos Ortuño (1964–4 January 1966, 1966–1969 ) (until May 26, chairman of the military junta)
  - Co-chairman of the military junta: Alfredo Ovando Candía ( 1964 , 1965–6 August 1966, 1969–1970 ) (from 4 January 1966 chairman of the military junta)
  - President René Barrientos Ortuño ( 1964–1966 , August 6, 1966–1969)

Brazil
- Head of State and Government: President Humberto Castelo Branco (1964–1967)

Chile
- Head of State and Government: President Eduardo Frei Montalva (1964–1970)

Ecuador
Head of State and Government:

Chairman of the military junta Ramón Castro Jijón (1963–29 March 1966)

Chief of Staff of the Armed Forces Telmo Vargas (March 29, 1966– March 30, 1966)

President Clemente Yerovi Indabur (March 30, 1966– November 16, 1966) ( Acting )

President Otto Arosemena Gómez (November 16, 1966–1968)

Guyana (independent since May 26, 1966)
- Head of State: Queen Elizabeth II (May 26, 1966–1970)
  - Governor General :
    - Richard Edmonds Luyt (May 26, 1966– October 31, 1966)
    - Kenneth Stoby (November 1, 1966– December 15, 1966) (acting)
    - David James Gardiner Rose (December 16, 1966–1969)
- Head of Government: Prime Minister Forbes Burnham (May 26, 1966–1980) (President 1980–1985)

Colombia
- Head of State and Government:
  - President Guillermo León of Valencia (1962–7 August 1966)
  - President Carlos Lleras Restrepo (August 7, 1966–1970)

Paraguay
- Head of State and Government: President Alfredo Stroessner (1954–1989)

Peru
- Head of State: President Fernando Belaúnde Terry (1963–1968, 1980–1985 )
- Head of Government: Prime Minister Daniel Becerra de la Flor (1965–1967)

Uruguay
- Head of State and Government:
  - Chairman of the Washington Beltrán National Council (1965–1 March 1966)
  - Chairman of the Mationalrat Alberto Héber Usher (March 1, 1966–1967)

Venezuela
- Head of State and Government: President Raúl Leoni (1964–1969)

Asia

East, South and Southeast Asia

Bhutan
- Head of State and Government: King Jigme Dorje Wangchuck (1952–1972)

Burma (from 1989 Myanmar )
- Head of State: Chairman of the Ne Win Revolutionary Council (1962–1981) (President from 1974) (1958–1960, 1962–1974 Prime Minister)

Ceylon (from 1972 Sri Lanka )
- Head of State: Queen Elizabeth II (1952–1972)
  - Governor General : William Gopallawa (1962–1972) (1972–1978 President)
- Head of Government: Prime Minister Dudley Shelton Senanayake ( 1952–1953, 1960 , 1965–1970)

Republic of China (Taiwan)

Head of State: President Chiang Kai-shek (1950–1975) (1928–1931, 1943–1948 Chairman of the National Government of China, 1948–1949 President of National China; 1930–1931, 1935–1938, 1939–1945, 1947 Prime Minister of National China)

Head of Government: Prime Minister Yen Chia-kan (1963–1972) (1975–1978 President)

People's Republic of China
- Party leader: Chairman of the Chinese Communist Party Mao Zedong (1943–1976) (1949–1954 Chairman of the Central People's Government; 1954–1959 President)
- Head of State: President Liu Shaoqi (1959–1968)
- Head of Government: Prime Minister Zhou Enlai (1949–1976)

India
- Head of State: President Sarvepalli Radhakrishnan (1962–1967)
- Head of Government:
  - Prime Minister Lal Bahadur Shastri (1964–11 January 1966)
  - Prime Minister Gulzarilal Nanda ( 1964 , January 11, 1966– January 24, 1966) (acting)
  - Prime Minister Indira Gandhi (January 24, 1966–1977, 1980–1984 )

Indonesia
- Head of State and Government: President Sukarno (1945–1967)

Japan
- Head of State: Emperor Hirohito (1926–1989)
- Head of Government: Prime Minister Eisaku Sato (1964–1972)

Cambodia
- Head of State: President Norodom Sihanouk (1960–1970, 1991–1993 ) (1941–1955, 1993–2004 König) (1945, 1950, 1952–1953, 1954, 1955–1956, 1956, 1956, 1957, 1958–1960, 1961 –1962 Prime Minister)
- Head of Government:
  - Prime Minister Norodom Kantol (1962– October 22, 1966)
  - Prime Minister Lon Nol (October 22, 1966–1967, 1969–1972 ) (1972–1975 President)

North Korea
- De facto ruler : Kim Il-sung (1948–1994)
- Head of State: Chairman of the Presidium of the Supreme People's Assembly Choe Yong-gon (1957–1972)
- Head of Government: Prime Minister Kim Il-sung (1948–1972)

South Korea
- Head of State: President Park Chung-hee (1962–1979)
- Head of Government: Prime Minister Chung Il-kwon (1964–1970)

Laos

Head of State: King Savang Vatthana (1959–1975)

Head of Government: Prime Minister Souvanna Phouma ( 1951–1954, 1956–1958, 1960 , 1962–1975)

Malaysia
- Head of State: Supreme Ruler Ismail Nasiruddin Shah (1965–1970)
- Head of Government: Prime Minister Abdul Rahman ( 1957–1959 , 1959–1970)

Maldives
- Head of State: Sultan Muhammad Fareed Didi (1954–1968)
- Head of Government: Prime Minister Ibrahim Nasir (1957–1968) (1968–1978 President) (office abolished)

Nepal
- Head of State: King Mahendra (1955–1972)
- Head of Government: First Minister Surya Bahadur Thapa ( 1963–1964 , 1965–1969, 1979–1983, 1997–1998, 2003–2004 )

Pakistan
- Head of State and Government: President Muhammed Ayub Khan (1958–1969) (1958 Prime Minister)

Philippines
- Head of State and Government: President Ferdinand Marcos (1965–1986)

Sikkim (under Indian suzerainty)

Head of State: King Palden Thondup Namgyal (1963–1975)

Head of Government: Prime Minister RN Haldipur (1963–1969)

Singapore
- Head of State: President Yusof bin Ishak (1959–1970)
- Head of Government: Prime Minister Lee Kuan Yew (1959–1990)

Thailand
- Head of State: King Rama IX. Bhumibol Adulyadej (1946-2016)
- Head of Government: Prime Minister Thanom Kittikachorn ( 1958 , 1963–1973)

Thailand
- Head of State: King Rama IX. Bhumibol Adulyadej (1946-2016)
- Head of Government: Prime Minister Thanom Kittikachorn ( 1958 , 1963–1973)

North Vietnam

Head of State: President Hồ Chí Minh (1945–1969) (1945–1955 Prime Minister)

Head of Government: Prime Minister Phạm Văn Đồng (1955–1976) (1976–1987 Chairman of the Council of Ministers of Vietnam)

South Vietnam

Head of State: President Nguyễn Văn Thiệu (1965–1975)

Head of Government: Prime Minister Nguyễn Cao Kỳ (1965–1967)

Middle East

Iraq
- Head of State:
  - President Abd as-Salam Arif (1963– April 13, 1966)
  - Prime Minister Abd ar-Rahman al-Bazzaz (April 13, 1966– April 17, 1966) (acting)
  - President Abd ar-Rahman Arif (April 17, 1966–1968) (1967 Prime Minister)
- Head of Government:
  - Prime Minister Abd ar-Rahman al-Bazzaz (1965–9 August 1966)
  - Prime Minister Naji Talib (August 9, 1966–1967)

Iran
- Head of State: Shah Mohammad Reza Pahlavi (1941–1979)
- Head of Government: Prime Minister Amir Abbas Hoveyda (1965–1977)

Israel
- Head of State: President Salman Shazar (1963–1973)
- Head of Government: Prime Minister Levi Eschkol (1963–1969)

Yemen
- Head of State: President Abdullah as-Sallal (1962–1967) (1962–1963, 1965, 1966–1967 Prime Minister)
- Head of Government:
  - Prime Minister Hassan al-Amri ( 1964, 1965 , 1965–18 September 1966, 1967–1969, 1971 )
  - Prime Minister Abdullah as-Sallal ( 1962–1963, 1965 , September 18, 1966–1967) (1962–1967 President)

Jordan
- Head of State: King Hussein (1952–1999)
- Head of Government: Prime Minister Wasfi at-Tall ( 1962–1963 , 1965–1967)

Kuwait

Head of State: Emir Sabah III. as-Salim as-Sabah (1965–1977) (Prime Minister 1963–1965)

Head of Government: Prime Minister Jabir al-Ahmad al-Jabir al-Sabah ( 1962–1963 , 1965–1978) (1977–2006 Emir)

Lebanon
- Head of State: President Charles Helou (1964–1970)
- Head of Government:
  - Prime Minister Rashid Karami ( 1955–1956, 1958–1960, 1961–1964 , 1965–9 April 1966, 1966–1968, 1969–1970, 1975–1976, 1984–1987 )
  - Prime Minister Abdullah Aref al-Yafi ( 1938–1939, 1951–1952, 1953–1954, 1956 , April 9, 1966– December 7, 1966, 1968–1969 )
  - Prime Minister Rashid Karami ( 1955–1956, 1958–1960, 1961–1964, 1965–1966 , December 7, 1966–1968, 1969–1970, 1975–1976, 1984–1987 )

Oman (British Protectorate 1891–1971)
- Head of State and Government: Sultan Said ibn Taimur (1932–1970)

Saudi Arabia
- Head of State and Government: King Faisal ibn Abd al-Aziz (1964–1975)

Syria
- Head of State:
  - Chairman of the Presidential Council Amin al-Hafiz (1963–23 February 1966) (until 1964 Chairman of the National Revolutionary Command Council) (1963–1964, 1964–1965 Prime Minister)
  - President Nureddin al-Atassi (February 25, 1966–1970) (Prime Minister 1968–1970)
- Head of Government:
  - Prime Minister Yusuf Zuayyin (1965–1 January 1966, 1966–1968 )
  - Prime Minister Salah ad-Din al-Bitar ( 1963, 1964 , January 1, 1966– February 25, 1966)
  - Prime Minister Yusuf Zuayyin ( 1965–1966 , February 25, 1966–1968)

Turkey
- Head of State:
  - President Cemal Gürsel (1960–28 May 1966) (1960–1961 Prime Minister)
  - President Cevdet Sunay (May 28, 1966–1973)
- Head of Government: Prime Minister Süleyman Demirel (1965–1971, 1975–1977, 1977–1978, 1979–1980, 1991–1993 ) (1993–2000 President)

Central Asia

Afghanistan

Head of State: King Mohammed Sahir Shah (1933–1973)

Head of Government: Prime Minister Mohammad Haschim Maiwandwal (1965–1967)

Mongolia
- Head of State: Chairman of the Great People's Chural Jamsrangiin Sambuu (1954–1972)
- Head of Government: Chairman of the Council of Ministers Yumjaagiin Tsedenbal (1952–1974) (1974–1984 Chairman of the Great People's Churals)

Australia and Oceania

Australia
- Head of State: Queen Elizabeth II (since 1952)
  - Governor General : Richard Casey, Baron Casey (1965–1969)
- Head of Government:
  - Prime Minister Robert Menzies ( 1939–1941 , 1949–22 January 1966)
  - Prime Minister Harold Holt (January 22, 1966–1967)

Cook Islands (independent state in free association with New Zealand)
- Head of State: Queen Elizabeth II (since 1965)
- Head of Government: Prime Minister Albert R. Henry (1965–1978)

New Zealand
- Head of State: Queen Elizabeth II (since 1952)
  - Governor General : Bernard Fergusson (1962–1967)
- Head of Government: Prime Minister Keith Holyoake ( 1957 , 1960–1972) (1977–1980 Governor General)

Western Samoa (today Samoa )

Head of State: O le Ao o le Malo Tanumafili II. (1962-2007)

Head of Government: Prime Minister Mata'afa Mulinu'u II (1962–1970, 1973–1975 )

Europe

Albania
- Party leader: 1st Secretary of the Albanian Workers' Party Enver Hoxha (1948–1985) (1946–1954 Prime Minister)
- Head of State: Chairman of the Presidium of the People's Assembly Haxhi Lleshi (1953–1982)
- Head of Government: Prime Minister Mehmet Shehu (1954–1981)

Andorra
- Co-princes :
  - President of France : Charles de Gaulle (1959–1969)
  - Bishop of Urgell : Ramon Iglésias Navarri (1943–1969)

Belgium
- Head of State: King Baudouin I (1951–1993)
- Head of Government:
  - Prime Minister Pierre Harmel (1965-19 March 1966)
  - Prime Minister Paul Vanden Boeynants (March 19, 1966–1968, 1978–1979 )

Bulgaria
- Party leader: General Secretary of the Bulgarian Communist Party Todor Zhivkow (1954–1989) (1971–1989 Chairman of the State Council) (1962–1971 Prime Minister)
- Head of State: Chairman of the Presidium of the National Assembly Georgi Traikow (1964–1971)
- Head of government: Chairman of the Council of Ministers Todor Zhivkov (1962–1971) (1954–1989 party leader) (1971–1989 Chairman of the Council of State)

Denmark
- Head of State: King Friedrich IX. (1947–1972)
- Head of Government: Prime Minister Jens Otto Krag (1962–1968, 1971–1972 )
- Faroe Islands (politically self-governing and autonomous part of the Kingdom of Denmark)
  - Representative of the Danish government: Reichsombudsmann Mogens election (1961–1972)
  - Head of Government: Prime Minister Hákun Djurhuus (1963–1967)

Federal Republic of Germany
- Head of State: Federal President Heinrich Lübke (1959–1969)
- Head of Government:
  - Federal Chancellor Ludwig Erhard (1963–1 December 1966)
  - Federal Chancellor Kurt Georg Kiesinger (December 1, 1966–1969)

German Democratic Republic
- Party leader: General Secretary of the Central Committee of the SED Walter Ulbricht (1950–1971) (1960–1973 Chairman of the State Council)
- Head of State: Chairman of the State Council Walter Ulbricht (1960–1973) (1950–1971 party leader)
- Head of Government: Chairman of the Council of Ministers Willi Stoph (1964–1973, 1976–1989 ) (1973–1976 Chairman of the State Council)

Finland
- Head of State: President Urho Kekkonen (1956–1982) (1950–1953, 1954–1956 Prime Minister)
- Head of Government:
  - Prime Minister Johannes Virolainen (1964– May 27, 1966)
  - Prime Minister Rafael Paasio (May 27, 1966–1968, 1972 )

France
- Head of State: President Charles de Gaulle (1959–1969) (1944–1946 Head of the Provisional Government), (1958–1959 President of the Council of Ministers)
- Head of Government: Prime Minister Georges Pompidou (1962–1968) (President 1969–1974)

Greece
- Head of State: King Constantine II (1964–1973 / 74) (in exile from 1967)
- Head of Government:
  - Prime Minister Stephanos Stephanopoulos ( 1955 , 1965–22 December 1966)
  - Prime Minister Ioannis Paraskevopoulos ( 1963–1964 , December 22, 1966–1967)

Ireland
- Head of State: President Éamon de Valera (1959–1973) (1932–1948, 1951–1954, 1957–1959 Prime Minister)
- Head of Government:
  - Prime Minister Seán Lemass (1959-10 November 1966)
  - Prime Minister Jack Lynch (November 10, 1966–1973, 1977–1979 )

Iceland
- Head of State: President Ásgeir Ásgeirsson (1952–1968) (Prime Minister 1932–1934)
- Head of Government: Prime Minister Bjarni Benediktsson (1963–1970)

Italy
- Head of State: President Giuseppe Saragat (1964–1971)
- Head of Government: Prime Minister Aldo Moro (1963–1968, 1974–1976 )

Yugoslavia
- Head of State: President Josip Broz Tito (1953–1980) (1945–1963 Prime Minister)
- Head of Government: Prime Minister Petar Stambolić (1963–1967) (1982–1983 President)

Channel Islands
- guernsey
  - Head of State and Government: Duchess Elisabeth II (since 1952)
    - Lieutenant Governor: Charles Coleman (1964–1969)
- jersey
  - Head of State and Government: Duchess Elisabeth II (since 1952)
    - Lieutenant Governor: Michael Villiers (1964–1969)

Liechtenstein
- Head of State: Prince Franz Josef II. (1938–1989)
- Head of Government : Gerard Batliner (1962–1970)

Luxembourg
- Head of State: Grand Duke Jean (1964–2000)
- Head of Government: Prime Minister Pierre Werner (1959–1974, 1979–1984 )

Malta

Head of State: Queen Elizabeth II (1964–1974)
Governor General Maurice Henry Dorman (1964–1971)

Head of Government: Prime Minister Ġorġ Borg Olivier (1964–1971)

Isle of Man

Head of State: Lord of Man Elizabeth II (since 1952)
Lieutenant Governor :

Ronald Herbert Garvey (1959–1966)

Peter Hyla Gawne Stallard (September 7, 1966–1974)

Head of Government: Chairman of the Executive Council Charles Kerruish (1961–1967)

Monaco
- Head of State: Prince : Rainier III. (1949-2005)
- Head of Government:
  - Minister of State Jean Émile Reymond (1963–28 December 1966)
  - Minister of State Paul Demange (December 28, 1966–1969)

Netherlands
- Head of State: Queen Juliana (1948–1980)
- Head of Government:
  - Prime Minister Jo Cals (1965-22 November 1966)
  - Prime Minister Jelle Zijlstra (November 22, 1966–1967)

Norway
- Head of State: King Olav V (1957–1991)
- Head of Government: Prime Minister Per Borten (1965–1971)

Austria
- Head of State: Federal President Franz Jonas (1965–1974)
- Head of Government: Federal Chancellor Josef Klaus (1964–1970)

Poland
- Party leader: 1st Secretary Władysław Gomułka ( 1943–1948 , 1956–1970)
- Head of State: Chairman of the Council of State Edward Ochab (1964–1968) (1956 party leader)
- Head of Government: Prime Minister Józef Cyrankiewicz ( 1947–1952 , 1954–1970) (1970–1972 Chairman of the State Council)

Portugal
- Head of State: President Américo Tomás (1958–1974)
- Head of Government: Prime Minister António de Oliveira Salazar (1932–1968)

Romania
- Party leader: General Secretary Nicolae Ceaușescu (1965–1989) (1967–1989 Head of State)
- Head of State: Chairman of the Chivu Stoica State Council (1965–1967) (1955–1961 Prime Minister)

San Marino
- Head of State: Capitani Reggenti
  - Alvaro Casali ( 1945, 1951, 1957, 1960 , October 1, 1965– April 1, 1966, 1969–1970 ) and Pietro Reffi (October 1, 1965– April 1, 1966, 1958–1958 )
  - Francesco Valli ( 1962 , April 1, 1966– October 1, 1966, 1970, 1974–1975 ) and Emilio Della Balda (April 1, 1966– October 1, 1966)
  - Giovanni Vito Marcucci ( 1961–1962 , October 1, 1966– April 1, 1967, 1975–1976 ) and Francesco Maria Francini (October 1, 1966– April 1, 1967, 1973 )

Sweden
- Head of State: King Gustav VI. Adolf (1950–1973)
- Head of Government: Prime Minister Tage Erlander (1946–1969)

Switzerland
- Federal President : Hans Schaffner (1966)
- Federal Council :
  - Paul Chaudet (1955–31 December 1966)
  - Willy Spühler (1960–1970)
  - Ludwig von Moos (1960–1971)
  - Hans-Peter Tschudi (1960–1973)
  - Hans Schaffner (1961–1969)
  - Roger Bonvin (1962-1973)
  - Rudolf Gnägi (January 1, 1966–1979)

Soviet Union
- Party leader: General Secretary of the CPSU Leonid Brezhnev (1964–1982) (until 1966 first secretary) (1960–1964, 1977–1982 head of state)
- Head of State: Chairman of the Presidium of the Supreme Soviet Nikolai Podgorny (1965–1977)
- Head of Government: Chairman of the Council of Ministers Alexei Kosygin (1964–1980)

Spain
- Head of State and Government: Caudillo Francisco Franco (1939–1975)

Czechoslovakia
- Party leader: Chairman Antonín Novotný (1953–1968) (1957–1968 President)
- Head of State: President Antonín Novotný (1957–1968) (1953–1968 party leader)
- Head of Government: Prime Minister Jozef Lenárt (1963–1968)

Hungary
- Party leader: General Secretary of the Party of Hungarian Working People János Kádár (1956–1988) (1956–1958, Prime Minister 1961–1965)
- Head of State: Chairman of the Presidential Council István Dobi (1952–1967) (1948–1952 Prime Minister)
- Head of Government: Prime Minister Gyula Kállai (1965–1967)

Vatican city
- Head of State: Pope Paul VI. (1963–1978)
- Head of Government: Cardinal State Secretary Amleto Giovanni Cicognani (1961–1969)

United Kingdom
- Head of State: Queen Elizabeth II (since 1952) (crowned 1953)
- Head of Government: Prime Minister Harold Wilson (1964–1970, 1974–1976 )

Republic of Cyprus
- Head of State and Government: President Makarios III. (1960–1974, 1947–1977 )

Remarks

↑ ^a ^b The Channel Islands and the Isle of Man are areas that are directly under the British Crown. They are not part of the UK.
↑ The Federal Council is the collective head of state in Switzerland. The Federal President has the role of primus inter pares

[kronbesitz-1] The Channel Islands and the Isle of Man are areas that are directly under the British Crown. They are not part of the UK.

[2] The Federal Council is the collective head of state in Switzerland. The Federal President has the role of primus inter pares