Persons
- Ackley, H. Gardner, Chairman of the Council of Economic Advisers November 1964–March 1968
- Adair, Charles W., Jr., Ambassador to Panama from May 6, 1965
- Adams, Robert W., Chief of the Political Section of the Embassy in Mexico until February 1964; Deputy Assistant Secretary of State for Inter-American Affairs to March 1965; Special Assistant to the Under Secretary of State for Economic Affairs March 1965– May 1966
- Agüero Rocha, Fernando, leader of the Partido Conservador Tradicionalista in Nicaragua; Union Nacional de Oposición candidate for President, February 1967
- Ailes, Stephen, Under Secretary of the Army until January 28, 1964; Secretary of the Army until June 30, 1965
- Alemán, Roberto, Special Panamanian Representative, United States–Panama Relations (after April 1965 Inter-Oceanic Canal Negotiations), from November 1964
- Alessandri Rodríguez, Jorge, President of Chile until November 4, 1964
- Allen, Ward P., Director, Office of Regional Political Affairs (after June 1965 Office of Inter-American Political Affairs), Bureau of Inter-American Affairs, Department of State, and Alternate U.S. Representative on the Council of the Organization of American States until October 1967
- Allende Gossens, Salvador, Senator (PSP, Chile); FRAP candidate for President, September 1964; President of the Chilean Senate from December 1966
- Alsogaray, Alvaro C., Argentine Ambassador at Large July–September 1966; Argentine Ambassador to the United States October 1966–September 1968
- Alsogaray, Major General Julio R., (later Lieutenant General), Commander of the First Army Corps in Argentina in June 1966; Head of the Military Household; Commander-in-Chief of the Army December 1966–August 1968
- Anderson, Robert B., Special U.S. Representative, U.S.–Panama Relations (after April 1965 Inter-Oceanic Canal Negotiations) from April 1964
- Arenales Catalán, Emilio, Foreign Minister of Guatemala from July 1966
- Arias Espinosa, Ricardo M., Panamanian Ambassador to the United States October 1964–January 1968
- Arias Madrid, Arnulfo, former President of Panama; leader of the Panameñista Party; Panameñista candidate for President, May 1964; National Union candidate for President, May 1968; President of Panama October 1–October 12, 1968
- Arosemena Gómez, Otto, President of Ecuador November 16, 1966–September 1,1968
- Balaguer, Joaquín Videla, President of the Dominican Republic from July 1, 1966
- Ball, George W., Under Secretary of State until September 30, 1966; U.S. Permanent Representative to the United Nations June 26–September 25, 1968
- Barall, Milton, special assistant to the Assistant Secretary of State for Inter-American Affairs, Deputy U.S. Representative to the Inter-American Economic and Social Committee, and Alternate U.S. Representative on the Inter-American Committee on the Alliance for Progress, May 1964–July 1966
- Barneby, Malcolm R., Deputy Director, Office of Ecuadorian-Peruvian Affairs, Bureau of Inter-American Affairs, Department of State, September 1964–October 1965; Director until June 1967
- Barnes, Donald F., interpreter in the Language Services Division, Office of Operations, Department of State
- Barr, Joseph, Under Secretary of the Treasury April 29, 1965–December 22, 1968; thereafter Secretary of the Treasury
- Barrientos Ortuño, General René, Vice President of Bolivia August–November 1964; leader of the military junta in Bolivia November 5, 1964–May 26, 1965; Co-President of Bolivia May 26, 1965–January 5, 1966; President of Bolivia from August 6, 1966
- Barrios, Gonzalo, Venezuelan Minister of Interior March 1964–November 1966; thereafter Secretary General of Acción Democrática; AD candidate for President December 1968
- Belaunde Terry, Fernando, President of Peru until October 3, 1968
- Belcher, Taylor G., Director, Office of West Coast Affairs, Bureau of Inter-American Affairs, Department of State, until February 1964
- Bell, David E., Administrator of the Agency for International Development until July 31, 1966
- Bell, John O., Ambassador to Guatemala until August 26, 1965
- Bennett, W. Tapley, Jr., Ambassador to the Dominican Republic until April 13, 1966
- Berle, Adolf A., former Assistant Secretary of State and Ambassador to Brazil; emeritus professor of law, Columbia University; chairman of the board, Twentieth Century Fund
- Berlin, Lawrence H., Deputy Director, Office of Ecuadorian-Peruvian Affairs, Bureau of Inter-American Affairs, Department of State, from March 1967
- Bernbaum, Maurice M., Ambassador to Ecuador until January 14, 1965; Ambassador to Venezuela from February 4, 1965
- Betancourt, Rómulo, President of Venezuela until March 11, 1964
- Bloomfield, Richard J., Director, Office of Ecuadorian-Peruvian Affairs, Bureau of Inter-American Affairs, Department of State, October 1967–July 1968
- Bohlen, Charles E., Deputy Under Secretary of State for Political Affairs from February 11, 1968
- Bosch, Juan, former President of the Dominican Republic
- Boster, Davis E., special assistant to the Assistant Secretary of State for Inter-American Affairs January 1964–April 1965
- Bowdler, William G., Deputy Coordinator of Cuban Affairs, Bureau of Inter-American Affairs, Department of State, until April 1965; member of the National Security Council staff until September 1968; Ambassador to El Salvador from September 26, 1968
- Boyd, Aquilino Edgardo, Panamanian Permanent Representative to the United Nations
- Breen, John R., Deputy Director, Office of Development Planning and Programs, Bureau of Inter-American Affairs, Department of State, January 1967–July 1968; thereafter Director, Office of Central American Affairs
- Brewin, Roger C., Officer-in-Charge of Bolivian Political Affairs, Office of Bolivian-Chilean Affairs, Bureau of Inter-American Affairs, Department of State, June 1964–August 1966
- Brezhnev, Leonid I., General Secretary, Central Committee, Communist Party of the Soviet Union from October 1964
- Briz(z)ola, Leonel, former Governor of Rio Grande do Sul; Congressman (PTB-Guanabara) until April 1964; brother-in-law of President Goulart
- Broderick, William D., Deputy Director, Office of Bolivian-Chilean Affairs, Bureau of Inter-American Affairs, Department of State, July 1966–August 1968
- Broe, William V., Chief of the Western Hemisphere Division, Directorate of Plans, Central Intelligence Agency, from June 1965
- Bronheim, David, Deputy U.S. Coordinator of the Alliance for Progress July 1965–July 1967
- Brown, Aaron S., Ambassador to Nicaragua until May 3, 1967
- Bulhões, Otávio Gouvéia de, Brazilian Minister of Finance April 1964–March 1967
- Bundy, McGeorge, Special Assistant to the President for National Security Affairs until February 28, 1966
- Bunker, Ellsworth, U.S. Representative on the Council of the Organization for American States January 29, 1964–November 7, 1966; Ambassador at Large November 8, 1966–April 11, 1967
- Burnham, Linden Forbes Sampson, Prime Minister of British Guiana December 1964–May 1966; thereafter Prime Minister of Guyana
- Burrows, Charles R., Ambassador to Honduras until June 28, 1965; Director, Office of Central American Affairs, Bureau of Inter-American Affairs, Department of State, November 1965–July 1968
- Burton, Ralph J., Director, Office of Brazilian Affairs, Bureau of Inter-American Affairs, Department of State, until March 1965
- Busby, Horace, Jr., Special Assistant to the President until October 1965
- Caldera Rodríguez, Rafael, founder and leader of the Comité de Organización Política Electoral Independiente, Venezuela; COPEI candidate for President December 1968; thereafter President-elect of Venezuela
- Califano, Joseph A., Jr., General Counsel, Department of the Army, until March 1964; Special Assistant to the Secretary of Defense until July 1965; thereafter Special Assistant to the President
- Calle Restropo, Diego, Colombian Finance Minister, February 1964–March 1965
- Campos, Roberto de Oliveira, former Brazilian Ambassador to the United States; Brazilian Minister of Planning and Economic Cooperation April 1964–March 1967
- Carlson, Reynold E., Ambassador to Colombia from September 16, 1966
- Carrillo Flores, Antonio, Mexican Ambassador to the United States until November 1964; Foreign Minister of Mexico from December 1, 1964
- Carter, Albert E., Deputy Director of Coordination for Intelligence and Research, Bureau of Intelligence and Research, Department of State, until December 1965
- Carter, Lieutenant General Marshall S., USA, Deputy Director of Central Intelligence until April 28, 1965; thereafter Director of the National Security Agency
- Castello Branco, General Humberto de Alencar, Chief of Staff of the Army in Brazil until April 1964; President of Brazil April 15, 1964–March 15, 1967
- Castro, Raul H., Ambassador to El Salvador October 3, 1964–July 17, 1968; Ambassador to Bolivia from August 1, 1968
- Castro Ruz, Fidel, Premier of Cuba
- Cater, S. Douglass Jr., Special Assistant to the President July 1965–October 1968
- Chamorro Cardenal, Pedro Joaquín, owner and publisher of La Prensa in Nicaragua; coordinator of the Union Nacional de Oposición during the 1967 Presidential campaign
- Chase, Gordon, member of the National Security Council staff until January 1966
- Chayes, Abram J., Legal Adviser, Department of State, until June 27, 1964
- Chiari Junior, Roberto Francisco, President of Panama until October 1, 1964
- Christian, George E., Special Assistant and Press Secretary to the President from February 1967
- Clark, Edward W., Director, Office of Panamanian Affairs, Bureau of Inter-American Affairs, Department of State, August 1964–June 1968
- Clifford, Clark M., Secretary of Defense from March 1, 1968
- Cline, Ray S., Deputy Director for Intelligence, Central Intelligence Agency, until January 1966; thereafter Special Assistant to the Director for Central Intelligence
- Coerr, Wymberley deR., Ambassador to Uruguay until January 22, 1965; Ambassador to Ecuador February 4, 1965–October 7, 1967
- Cole, Charles W., Ambassador to Chile until September 27, 1964
- Collins, V. Lansing, Director, Office of Central American and Panamanian Affairs (after March 12, 1964, Office of Panamanian Affairs), Bureau of Inter-American Affairs, Department of State, until August 1964
- Costa e Silva, General Arturo da, Chief of the Brazilian Army Department of Production and Works until April 1964; Brazilian Minister of War April 1964–June 1966; ARENA candidate for President, October 1966; President of Brazil from March 15, 1967
- Costa Méndez, Nicanor, Foreign Minister of Argentina from July 5, 1966
- Cottrell, Sterling J., Deputy Assistant Secretary of State for Inter-American Affairs until February 1964; Special Adviser to the Special U.S. Representative, U.S.-Panama Relations, May 1964–April 1965; Deputy Chief of Mission, Embassy in Venezuela, until April 1967
- Crimmins, John H., Coordinator of Cuban Affairs, Bureau of Inter-American Affairs, Department of State, until January 1966; Ambassador to the Dominican Republic from June 27, 1966
- Crowley, John J.. Jr., Officer-in-Charge of Venezuelan Affairs, Office of Colombian-Venezuelan Affairs (after May 1966 Officer-in-Charge of Venezuelan Political Affairs, Office of North Coast Affairs), Bureau of Inter-American Affairs, Department of State, August 1964–August 1966; thereafter Deputy Chief of Mission, Embassy in Ecuador
- De Gaulle, Charles, President of France
- De la Rosa, Diógenes, Special Panamanian Representative, U.S.-Panama Relations (after April 1965 Inter-Oceanic Canal Negotiations) from November 1964
- De Lavalle, Juan Bautista, Peruvian Representative to the Council of the Organization of American States until February 1968; also Chairman of the General Committee on the Council of the Organization of American States until November 1964
- Delvalle, Max, First Vice President of Panama October 1964–September 1968; rival President of Panama March 25–October 1, 1968
- Denney, George C., Jr., Deputy Director of the Bureau of Intelligence and Research, Department of State
- Dentzer, William T., Jr., Director, Office of Bolivian-Chilean Affairs, Bureau of Inter-American Affairs, March 1964–August 1965; Director, AID Mission in Peru, until September 1968
- Díaz Ordaz, Gustavo, PRI candidate for President, July 1964; President of Mexico from December 1, 1964
- Dillon, C. Douglas, Secretary of the Treasury until March 31, 1965
- Dirksen, Everett M., Senator (Republican–Illinois); Senate Minority Leader
- Dreyfuss, John T., Officer-in-Charge of Argentine Political and Development Affairs, Office of Argentine, Paraguayan, and Uruguayan Affairs, Bureau of Inter-American Affairs, Department of State, December 1965–August 1968
- Duke, Angier Biddle, Chief of Protocol, Department of State, until January 20, 1965
- Dungan, Ralph A., Special Assistant to the President until September 1964; Ambassador to Chile November 24, 1964–August 2, 1967
- Durán Neumann, Julio, Senator (PR, Chile); DF candidate for President, September 1963–March 16, 1964; PR candidate for President from April 5, 1964
- Eaton, Samuel D., Deputy Director, Office of Colombian-Venezuelan Affairs (after May 1966 Office of North Coast Affairs), Bureau of Inter-American Affairs, Department of State, April 1965–July 1966; Special Assistant to the Assistant Secretary of State for Inter-American Affairs July 1966–August 1967
- Echandi Jiménez, Mario, former President of Costa Rica
- Eisenhower, Dwight D., former President of the United States
- Eisenhower, Milton S., President of Johns Hopkins University until June 1967; Special Adviser on Latin American Affairs from December 1967
- Eleta Almaran, Fernando, Foreign Minister of Panama October 1964–September 1968
- Ensor, Andrew F., Chief, Fuels and Energy Division, Office of International Resources, Bureau of Economic Affairs, Department of State, later Director, Office of Fuels and Energy, to 1966
- Evans, Allan, Deputy Director for Research, Bureau of Intelligence and Research, Department of State
- Figueres Ferrer, José, former President of Costa Rica
- FitzGerald, Desmond, Deputy Chief of the Western Hemisphere Division for Cuban Affairs, Directorate of Plans, Central Intelligence Agency, until March 1964; Chief of the Western Hemisphere Division March 1964–June 1965; Deputy Director for Plans until July 1967
- Fitzgerald, John F., Deputy Coordinator of Cuban Affairs, Bureau of Inter-American Affairs, Department of State, May 1966–July 1967; thereafter Coordinator
- Ford, Gerald R., Representative (Republican–Michigan); House Minority Leader from January 1965
- Foster, William C., Director of the Arms Control and Disarmament Agency
- Fowler, Henry H., Secretary of the Treasury April 1, 1965–December 23, 1968
- Fowler, James R., Deputy U.S. Coordinator of the Alliance for Progress from August 1967
- Frank, Richard A., Assistant Legal Adviser for Inter-American Affairs, Department of State, November 1966–September 1968
- Freeman, Fulton, Ambassador to Colombia until February 1964; Ambassador to Mexico from March 4, 1964
- Freeman, Orville L., Secretary of Agriculture
- Frei Montalva, Eduardo, Senator (PDC, Chile); PDC candidate for President, September 1964; President of Chile from November 4, 1964
- Friedman, Alvin, Deputy Assistant Secretary of Defense for International Security Affairs (Far East and Latin America) 1964–1966
- Fulbright, J. William, Senator (Democrat–Arkansas); Chairman of the Senate Foreign Relations Committee
- Gardner, James R., Deputy Director of Coordination for Intelligence and Research, Bureau of Intelligence and Research, Department of State, from December 1965
- Gaud, William S., Deputy Administrator of the Agency for International Development February 1964–August 2, 1966; thereafter Administrator
- Gestido, Oscar, President of Uruguay March 1–December 6, 1967
- Glaessner, Philip J. W., Deputy Assistant Administrator for Capital Development, Bureau for Latin America, Agency for International Development; from March 12, 1964, also Director, Office of Capital Development, Bureau of Inter-American Affairs, Department of State
- Goodpaster, Lieutenant General Andrew J., USA, Assistant to the Chairman of the Joint Chiefs of Staff until July 1966; Director, Joint Staff, August 1966–March 1967
- Gordon, A. Lincoln, Ambassador to Brazil until February 25, 1966; Assistant Secretary of State for Inter-American Affairs and U.S. Coordinator of the Alliance for Progress March 9, 1966–June 30, 1967
- Goulart, João Belchior Marques, President of Brazil until April 2, 1964
- Greenfield, James L., Deputy Assistant Secretary of State for Public Affairs until September 1964
- Gruening, Ernest, Senator (Democrat–Alaska)
- Guerrero Gutiérrez, Lorenzo, President of Nicaragua August 3, 1966–May 1, 1967
- Guevara de la Serna, Major Ernesto “Che,” Cuban Minister of Industry until 1965
- Harriman, W. Averell, former Governor of New York; Under Secretary of State for Political Affairs until March 17, 1965; thereafter Ambassador at Large
- Hartman, Arthur A., special assistant to the Deputy Secretary of State and staff director, Senior Interdepartmental Group, from August 1967
- Haya de la Torre, Raúl Víctor, founder and leader of the Alianza Popular Revolucionaria Americana (APRA) and the Partido Aprista Peruano
- Helms, Richard M., Deputy Director for Plans, Central Intelligence Agency, until April 28, 1965; Deputy Director of Central Intelligence April 28, 1965–June 30, 1966; thereafter Director of Central Intelligence
- Henderson, Douglas, Ambassador to Bolivia until August 7, 1968
- Herbert, Ray, Deputy Chief of the Western Hemisphere Division, Directorate of Plans, Central Intelligence Agency until June 1965
- Herrera Lane, Felipe, President of the Inter-American Development Bank
- Hickenlooper, Bourke B., Senator (Republican–Iowa)
- Hill, John Calvin, Jr., Deputy Chief of Mission, Embassy in Venezuela, until April 1965; thereafter Director, Office of Colombian-Venezuelan Affairs (after May 1966 Office of North Coast Affairs), Bureau of Inter-American Affairs, Department of State
- Hornig, Donald F., Special Assistant to the President for Science and Technology
- Hoyt, Henry A., Director, Office of Argentine, Paraguayan, and Uruguayan Affairs, Bureau of Inter-American Affairs, Department of State, January 1964–May 1965; Ambassador to Uruguay May 6, 1965–December 16, 1967
- Hughes, Thomas L., Director of the Bureau of Intelligence and Research, Department of State
- Humphrey, Hubert H., Senator (Democrat–Minnesota) and Senate Majority Whip until December 29, 1964; Vice President of the United States from January 20, 1965; Democratic candidate for President, November 1968
- Hurwitch, Robert A., First Secretary of the Embassy in Chile July–September 1964
- Illia, Arturo Umberto, President of Argentina until June 28, 1966
- Illueca, Jorge E., Special Panamanian Representative, U.S.–Panama Relations (Panama Canal Treaty negotiations) April–November 1964
- Iribarren Borges, Ignacio, Foreign Minister of Venezuela from March 11, 1964
- Irwin, John N., II, Special U.S. Representative for Inter-Oceanic Canal Negotiations April 1965–July 1967
- Jagan, Cheddi B., Prime Minister of British Guiana until December 1964
- Jenkins, Walter W., Special Assistant to the President until October 1964
- Jessup, Peter, member of the National Security Council staff; executive secretary of the 5412 Special Group (after June 2, 1964, the 303 Committee)
- Johnson, General Harold K., USA, Chief of Staff, U.S. Army
- Johnson, Lyndon B., President of the United States
- Johnson, U. Alexis, Deputy Under Secretary of State for Political Affairs until July 12, 1964 and November 1, 1965–October 9, 1966
- Johnson, W. Thomas, Jr., Assistant Press Secretary to the President September 1966–September 1968; thereafter Deputy Press Secretary to the President
- Johnston, James D., staff assistant to the Assistant Secretary of State for Inter-American Affairs January 1964–April 1965; staff assistant to the Under Secretary of State for Economic Affairs until September 1966
- Johnston, James R., Officer-in-Charge of Nicaraguan Political and Economic Affairs, Office of Central American Affairs, Bureau of Inter-American Affairs, Department of State, June 1966–May 1968; also Officer-in-Charge of British Honduran Political and Economic Affairs February–December 1966
- Jones, J. Wesley, Ambassador to Peru
- Jones, James R., Assistant to the President February 1965–January 1968; thereafter Deputy Special Assistant to the President
- Jova, Joseph John, Deputy Chief of Mission in Chile until May 1965; Ambassador to Honduras from June 7, 1965
- Karamessines, Thomas, Assistant Deputy Director for Plans, Central Intelligence Agency, until July 1967; thereafter Deputy Director for Plans
- Katzenbach, Nicholas deB., Attorney General September 4, 1964–September 30, 1966; thereafter Under Secretary of State
- Kennedy, Robert F., Attorney General until September 3, 1964; Senator (Democrat–New York) January 1965–June 6, 1968
- Khrushchev, Nikita S., Soviet Premier until October 15, 1964
- Kilday, Lowell C., Officer-in-Charge of Ecuadorian Political Affairs, Office of Ecuadorian-Peruvian Affairs, Bureau of Inter-American Affairs, Department of State, August 1967–November 1968
- Killoran, Thomas F., U.S. Consul General in San Pedro Sula September 1964–July 1966; Officer-in-Charge of Guatemalan Political and Economic Affairs, Office of Central American Affairs, Bureau of Inter-American Affairs, Department of State, August 1966–February 1968; thereafter Deputy Director, Office of Central American Affairs
- King, Colonel J. C., USA (retired), Chief of the Western Hemisphere Division, Directorate of Plans, Central Intelligence Agency, until March 1964
- Kitchen, Jeffrey C., Deputy Assistant Secretary of State for Politico-Military Affairs until July 1967
- Kohler, Foy D., Deputy Under Secretary of State for Political Affairs November 29, 1966–December 31, 1967
- Komer, Robert W., member of the National Security Council staff until October 1965; Deputy Special Assistant to the President for National Security Affairs October 1965– March 1966; acting Special Assistant to the President for National Security Affairs, March 1966; thereafter Special Assistant to the President until January 1967
- Koren, Henry L. T., Deputy Director for Coordination, Bureau of Intelligence and Research, Department of State, September 1965–June 1966
- Korry, Edward M., Ambassador to Chile from August 23, 1967
- Kosygin, Alexei N., Soviet Premier from October 15, 1964
- Krebs, Max V., Deputy Chief of Mission in Guatemala from August 1967
- Krieg, William L., Director, Office of Argentine, Paraguayan, and Uruguayan Affairs, Bureau of Inter-American Affairs, Department of State, from May 1965
- Kruel, General Amaury, Commander of the Second Army in Brazil until August 1966
- Kubisch, Jack B., Chief of the Economic Section, Embassy in Brazil, and Director of the AID Mission until January 1965; Director, Office of Brazilian Affairs, Bureau of Inter-American Affairs, Department of State, from March 1965
- Kubitschek, Juscelino, former President of Brazil
- Lacerda, Carlos, Governor of Guanabara, Brazil, until December 1965
- Lang, William E., Deputy Assistant Secretary of Defense for International Security Affairs (Africa and Foreign Military Rights) 1965–1966, then (Africa, Latin America, and Foreign Military Rights)
- Leandro Mora, Reinaldo, Venezuelan Minister of Interior from November 1966
- Lechín Oquendo, Juan, General Secretary of the Mine Workers’ Federation in Bolivia until May 1965; also Vice President of Bolivia until May 1964
- Leddy, John M., Assistant Secretary of State for European and Canadian Affairs from June 16, 1965
- Leitão da Cunha, Vasco, Foreign Minister of Brazil April 1964–December 1965; Brazilian Ambassador to the United States January 1966–June 1968
- Leonhardy, Terrence G., Director, Office of Mexican Affairs, Bureau of Inter-American Affairs, Department of State, September 1964–December 1967
- Leoni Otero, Raúl, President of Venezuela from March 11, 1964
- Lewis, Samuel W., member of the National Security Council staff from September 1968
- Linowitz, Sol M., U.S. Representative on the Council of the Organization of American States, the Inter-American Economic and Social Committee, and the Inter-American Committee on the Alliance for Progress from October 13, 1966
- Little, Edward S., special assistant to the Secretary of State until May 1965
- Lleras Restropo, Carlos, National Front (Liberal Party) candidate for President, May 1966; President of Colombia from August 7, 1966
- López Arellano, Colonel Oswaldo, later General, leader of the military junta in Honduras until June 6, 1965; thereafter President of Honduras
- López Mateos, Alfonso, President of Mexico until December 1, 1964
- Lord, Peter P., Officer-in-Charge of Colombian Affairs, Office of Colombian-Venezuelan Affairs (after May 1966 Officer-in-Charge of Colombian Political Affairs, Office of North Coast Affairs), Bureau of Inter-American Affairs, Department of State, July 1964–August 1966; Officer-in-Charge of Venezuelan Political Affairs until June 1967
- Lowenfeld, Andreas F., Assistant Legal Adviser for Economic Affairs, Department of State, until August 1965; thereafter Deputy Legal Adviser
- Magalhães Kelly, Juracy Montenegro, Brazilian Ambassador to the United States July 1964–September 1965; Brazilian Minister of Justice and the Interior October 7, 1965–January 14, 1966; Foreign Minister of Brazil until March 15, 1967
- Magalhães Pinto, José de, President of the Uniäo Democrática Nacional; Governor of Minas Gerais, Brazil, until December 1965; Congressman (ARENA-Minas Gerais) from November 1966; Foreign Minister of Brazil from March 15, 1967
- Manatos, Mike N., Administrative Assistant to President Johnson
- Mann, Thomas C., Assistant Secretary of State for Inter-American Affairs and U.S. Coordinator of the Alliance for Progress January 3, 1964–March 17, 1965; Under Secretary of State for Economic Affairs until May 31, 1966; President of the Automobile Manufacturers Association from 1967
- Manning, Robert J., Assistant Secretary of State for Public Affairs to July 31, 1964
- Mansfield, Michael J., Senator (Democrat–Montana); Senate Majority Leader
- Margolies, Daniel F., Director, Office of East Coast Affairs (after March 12, 1964, Office of Colombian-Venezuelan Affairs), Bureau of Inter-American Affairs, Department of State, until May 1965
- Marks, Leonard H., Director of the United States Information Agency September 1, 1965–December 6, 1968
- Martin, Edwin M., Assistant Secretary of State for Inter-American Affairs until January 2, 1964; Ambassador to Argentina January 29, 1964–January 5, 1968
- Mayobre, José Antonio, Venezuelan Minister of Mines and Hydrocarbons from January 1967
- Mazzilli, Pascoal Ranieri, President of the Brazilian Chamber of Deputies until February 1965; Acting President of Brazil April 2–15, 1964
- McCone, John A., Director of Central Intelligence until April 28, 1965
- McNamara, Robert S., Secretary of Defense until February 29, 1968
- McNaughton, John T., Assistant Secretary of Defense for International Security Affairs July 1, 1964–July 19, 1967
- McPherson, Harry C., Jr., Deputy Under Secretary of the Army for International Affairs until August 1964; also Special Assistant to the Secretary of the Army for Civilian Functions March–August 1964; Assistant Secretary of State for Educational and Cultural Affairs August 23, 1964–August 14, 1965; thereafter Special Counsel to the President
- Meeker, Leonard C., Legal Adviser of the Department of State from May 18, 1964
- Mein, John Gordon, Deputy Chief of Mission, Embassy in Brazil, until August 1965; Ambassador to Guatemala September 1, 1965–August 28, 1968
- Méndez Montenegro, Julio César, PR candidate for President, March 1966; President of Guatemala from July 1, 1966
- Mercado Jarrin, Brigadier General Edgardo, Foreign Minister of Peru from October 1968
- Meyer, Cord, Jr., Chief, Covert Action Staff, Directorate of Plans, Central Intelligence Agency, until July 1967; thereafter Assistant Deputy Director for Plans
- Molina Silva, Sergio, Chilean Minister of Finance from November 1964
- Mora Otera, José A., Secretary General of the Organization of American States until May 1968
- Moreno, Miguel J., Jr., Panamanian Representative to the Council of the Organization of American States until September 1964; also Panamanian Ambassador to the United States April–September 1964
- Morgan, Thomas E., Representative (Democrat–Pennsylvania); Chairman of the House Foreign Affairs Committee
- Morris, Patrick F., Director, Office of Bolivian-Chilean Affairs, Bureau of Inter-American Affairs, Department of State, November 1965–September 1968
- Morse, Wayne L., Senator (Democrat–Oregon); Chairman of the Subcommittee on American Republics Affairs, Senate Foreign Relations Committee
- Moscoso, Teodoro, U.S. Representative to the Inter-American Economic and Social Committee and the Inter-American Committee on the Alliance for Progress, and Special Adviser to the Assistant Secretary of State for Inter-American Affairs, January–May 1964
- Moyers, Bill D., Special Assistant and Press Secretary (from July 1965) to the President to February 1967
- Nitze, Paul H., Deputy Secretary of Defense from July 1, 1967
- Nixon, Richard M., former Vice President of the United States; President-elect of the United States from November 5, 1968
- O’Brien, Lawrence F., Special Assistant to the President until November 1965
- Oduber Quirós, Daniel, Foreign Minister of Costa Rica until January 1965; PLN candidate for President, February 1966
- Oliver, Covey T., Ambassador to Colombia May 1, 1964–August 29, 1966; Assistant Secretary of State for Inter-American Affairs and U.S. Coordinator of the Alliance for Progress July 1, 1967–December 31, 1968
- O’Meara, General Andrew P., USA, Commander-in-Chief, U.S. Southern Command, until February 22, 1965
- Onganía, Lieutenant General Juan Carlos, Commander-in-Chief of the Army in Argentina until November 1965; President of Argentina from June 28, 1966
- Orlich Bolmarcich, Francisco José, President of Costa Rica until May 8, 1966
- Ovando Candía, General Alfredo, Commander-in-Chief of the Armed Forces in Bolivia; Co-President of Bolivia May 26, 1965–January 5, 1966; President of Bolivia January 5–August 6, 1966
- Pacheco Areco, Jorge, President of Uruguay from December 6, 1967
- Palmer, Donald K., Director, Office of Regional Economic Policy, Bureau of Inter-American Affairs, Department of State, January 1964–August 1965; thereafter Deputy Assistant Secretary of State for Inter-American Affairs (Economic Policy)
- Pastor de la Torre, Celso, Peruvian Ambassador to the United States until October 1968
- Paz Estenssoro, Victor, President of Bolivia until November 4, 1964
- Peralta Azurdia, Colonel Enrique, President of Guatemala until July 1, 1966
- Pérez Alfonso, Juan Pablo, former Venezuelan Minister of Mines and Hydrocarbons
- Pérez Guerrero, Manuel, Venezuelan Minister of Mines and Hydrocarbons until January 1967
- Perón, Juan Domingo, former President of Argentina
- Peterson, Lawrence L., Deputy Director, Office of North Coast Affairs, Bureau of Inter-American Affairs, Department of State, from August 1968
- Pinilla Fábrega, Colonel José María, President of Panama from October 13, 1968
- Pistarini, Major General Pascual Angel, later Lieutenant General, Commander-in-Chief of the Army in Argentina November 1965–December 1966; also Argentine Minister of Defense July–September 1966
- Poats, Rutherford M., Deputy Administrator of the Agency for International Development from May 1967
- Porter, General Robert W., Jr., USA, Commander-in-Chief, U.S. Southern Command, from February 22, 1965
- Pryce, William T., staff assistant to the Assistant Secretary of State for Inter-American Affairs January 1964–April 1965
- Raborn, Vice Admiral William F., Jr., USN (retired), Director of Central Intelligence April 28, 1965–June 30, 1966
- Read, Benjamin H., Special Assistant to the Secretary of State and Executive Secretary, Department of State
- Reedy, George E., Special Assistant and Press Secretary (from March 1964) to the President until July 1965
- Resor, Stanley R., Under Secretary of the Army April 5–July 7, 1965; thereafter Secretary of the Army
- Ribeiro, General Jair Dantas, Brazilian Minister of War until April 1, 1964
- Richardson, Ralph W., Officer-in-Charge of Chilean Affairs, Office of West Coast Affairs (after March 12, 1964 Office of Bolivian-Chilean Affairs), Bureau of Inter-American Affairs, Department of State, until September 1964
- Rielly, John, Assistant to the Vice President from January 1965
- Robles Méndez, Marco Aurelio, National Liberal Party candidate for President, May 1964; President of Panama October 1, 1964–October 1, 1968
- Rockefeller, David, President and Chairman of the Executive Committee of Chase Manhattan Bank; Director of the Council on Foreign Relations; head of the Business Group for Latin America (from 1965 the Council for Latin America)
- Rogers, William D., Deputy U.S. Coordinator of the Alliance for Progress until June 1965
- Rostow, Eugene V., Under Secretary of State for Political Affairs from October 14, 1966
- Rostow, Walt W., Counselor and Chairman, Policy Planning Council, Department of State, until March 31, 1966; also U.S. Representative to the Inter-American Economic and Social Committee and the Inter-American Committee on the Alliance for Progress May 1964–March 1966; Special Assistant to the President from April 1, 1966
- Rowan, Carl T., Director of the United States Information Agency February 27, 1964–July 10, 1965
- Rowell, Edward M., Officer-in-Charge of Honduran Affairs, Office of Central American and Panamanian Affairs (after March 12, 1964, Office of Central American Affairs), Bureau of Inter-American Affairs, Department of State, until April 1964
- Rusk, Dean, Secretary of State
- Russell, Richard B., Senator (Democrat–Georgia); Chairman of the Senate Armed Services Committee
- Saccio, Leonard J., Deputy Chief of Mission, Embassy in Argentina, from July 1965
- Salans, Carl F., Assistant Legal Adviser for Inter-American Affairs, Department of State, June 1965–March 1967; thereafter Deputy Legal Adviser
- Salinger, Pierre E. G., Special Assistant and Press Secretary to the President until March 1964
- Samudio Avila, David, Panamanian Minister of Finance October 1964–December 1967; Liberal Party candidate for President, May 1968
- Sánchez Gavito, Vicente, Mexican Representative to the Council of the Organization of American States until February 1965
- Sanders, Irving L., Officer-in-Charge of Uruguayan Political Affairs, Office of Argentine, Paraguayan and Uruguayan Affairs, Bureau of Inter-American Affairs, Department of State, from August 1967
- Sanders, Terry B., Jr., Director, Office of Panamanian Affairs, Bureau of Inter-American Affairs, Department of State, from September 1968
- Sanjines-Goytia, Colonel Julio, Bolivian Ambassador to the United States from May 1965
- Sanz de Santamaría, Carlos, Chairman of the Inter-American Committee on the Alliance for Progress
- Sapena Pastor, Raúl, Foreign Minister of Paraguay
- Sause, Oliver L., Jr., Director, Office of Central American Affairs, Bureau of Inter-American Affairs, Department of State, March 1964–November 1965
- Sayre, Robert M., Director, Office of Mexican Affairs, Bureau of Inter-American Affairs, Department of State, until April 1964; member of the National Security Council staff until April 1965; Deputy Assistant Secretary of State for Inter-American Affairs April 1965–July 1968; Ambassador to Uruguay from July 24, 1968
- Schlesinger, Arthur M., Jr., Special Assistant to the President until March 1, 1964
- Schultze, Charles L., Director of the Bureau of the Budget June 1, 1965–January 29, 1968
- Scott, Joseph W., Deputy Director for Coordination, Bureau of Intelligence and Research, Department of State, until July 1964
- Seidenman, Neil A., interpreter in the Language Services Division, Office of Operations, Department of State
- Sessions, Edson O., Ambassador to Ecuador from August 1, 1968
- Sevilla Sacasa, Guillermo, Nicaraguan Ambassador to the United States; also Nicaraguan Representative to the Council of the Organization of American States; Dean of the Diplomatic Corps, Washington
- Shankle, A. Perry, Officer-in-Charge of Chilean Political Affairs, Office of Bolivian-Chilean Affairs, Bureau of Inter-American Affairs, Department of State, from January 1967
- Sharp, Frederick D. III, Deputy Director, Office of Inter-American Security Affairs, Bureau of Inter-American Affairs, Department of State, August 1966–June 1968; thereafter Director
- Shumate, John P., Jr., Officer-in-Charge of Peruvian Political Affairs, Office of Ecuadorian-Peruvian Affairs, Bureau of Inter-American Affairs, Department of State, from July 1967
- Siracusa, Ernest V., Deputy Chief of Mission, Embassy in Peru
- Sloan, Frank K., Deputy Assistant Secretary of Defense for International Security Affairs (Regional Affairs) until 1965
- Smith, Bromley K., Executive Secretary of the National Security Council staff
- Smith, James F., Officer-in-Charge of Ecuadorian Development Affairs, Office of Ecuadorian-Peruvian Affairs, Bureau of Inter-American Affairs, Department of State, May 1966–April 1968
- Snow, William P., Ambassador to Paraguay until June 15, 1967
- Solís, Galileo, Foreign Minister of Panama until September 1964
- Solomon, Anthony M., Deputy Assistant Secretary of State for Inter-American Affairs (Economic Policy) until April 1965; Acting Assistant Secretary of State for Economic Affairs April–May 1965; Assistant Secretary of State for Economic Affairs from June 1, 1965
- Somoza Debayle, General Anastasio, Commandant of the National Guard in Nicaragua; PLN candidate for President, February 1967; President of Nicaragua from May 1, 1967
- Somoza Debayle, Luis, former President of Nicaragua
- Sorensen, Theodore C., Special Counsel to the President until February 29, 1964
- Sowash, William B., Deputy Director, Office of Central American Affairs, Bureau of Inter-American Affairs, Department of State, July 1964–September 1965
- Starzel, Robert F., staff assistant to the Assistant Secretary of State for Inter-American Affairs July 1967–July 1968
- Stedman, William P., Jr., Chief of the Economic Section, Embassy in Peru, and Deputy Director, AID Mission, September 1966–July 1968; thereafter Director, Office of Ecuadorian-Peruvian Affairs, Bureau of Inter-American Affairs, Department of State
- Steins, Kenedon P., Officer-in-Charge of Guatemalan Affairs, Office of Central American Affairs, Bureau of Inter-American Affairs, Department of State, April 1964–August 1966
- Stevenson, Adlai E., U.S. Permanent Representative to the United Nations until July 14, 1965
- Stewart, C. Allen, Ambassador to Venezuela until November 28, 1964
- Stoessel, Walter J. Jr., Deputy Assistant Secretary of State for European Affairs September 1965–July 1968
- Stroessner, General Alfredo, President of Paraguay
- Sullivan, Leonor K., Representative (Democrat–Missouri); Chairman of the Panama Canal Subcommittee, House Merchant Marine and Fisheries Committee
- Taylor, General Maxwell D., USA, Chairman of the Joint Chiefs of Staff until July 1, 1964
- Taylor, Vice Admiral Rufus L., USN, Deputy Director of Central Intelligence from October 13, 1966
- Tejera París, Enrique, Venezuelan Ambassador to the United States; also Venezuelan Representative to the Council of the Organization of American States until April 1966; chairman of the Inter-American Peace Committee (Panama Crisis) January–April 1964
- Telles, Raymond, Ambassador to Costa Rica until February 19, 1967
- Thomas, Charles H., II, staff assistant to the Assistant Secretary of State for Inter-American Affairs May 1965–March 1966
- Thompson, Llewellyn E., Ambassador at Large until December 26, 1966; also Acting Deputy Under Secretary of State for Political Affairs July 1964–October 1965
- Tomic Romero, Radomiro, Senator (PDC, Chile); Chilean Ambassador to the United States April 1965–March 1968
- Torrijos Herrera, Lieutenant Colonel Omar, Secretary of the General Staff of the Panamanian National Guard in October 1968; thereafter Colonel, Chief of Staff of the National Guard
- Trejos Fernández, José Joaquín, National Unification Party candidate for President, February 1966; President of Costa Rica from May 8, 1966
- Trueheart, William C. Deputy Director for Coordination, Bureau of Intelligence and Research, Department of State, from June 1967
- Tuthill, John W., Ambassador to Brazil from May 27, 1966
- Tyler, William R., Assistant Secretary of State for European and Canadian Affairs until May 18, 1965
- Udall, Stewart, Secretary of Interior
- Vaky, Viron P., Deputy Assistant Secretary of State for Inter-American Affairs August– December 1968; Acting Assistant Secretary of State for Inter-American Affairs from January 1969
- Valdés Subercaseaux, Gabriel, Chilean Foreign Minister from November 1964
- Valencia, Guillermo León, President of Colombia until August 7, 1966
- Valenti, Jack J., Special Assistant to the President until May 1966
- Vallarino, Colonel Bolívar, later General, Commandant of the Panamanian National Guard until October 1968
- Vance, Cyrus R. Secretary of the Army until January 20, 1964; Deputy Secretary of Defense until June 30, 1967
- Van Reigersberg, Fernando A., interpreter in the Language Services Division, Office of Operations, Department of State
- Vásquez Salas, Jorge, Foreign Minister of Peru September 1965–September 1967
- Vaughn, Jack Hood, Ambassador to Panama April 8, 1964–February 27, 1965; Assistant Secretary of State for Inter-American Affairs and U.S. Coordinator of the Alliance for Progress March 22, 1965–February 28, 1966; thereafter Director of the Peace Corps
- Velasco Alvarado, General Juan, Commanding General of the Army and Chief of the Armed Forces Joint Command in Peru from 1967; President of the Revolutionary Government of the Armed Forces of Peru from October 4, 1968
- Velasco Ibarra, José María, President of Ecuador from September 1, 1968
- Villeda Morales, Ramón, former President of Honduras
- Walters, Colonel Vernon A., later Brigadier General, USA, U.S. Army Attaché in Brazil until June 1967
- Warner, Leland W., Jr., Officer-in-Charge of Honduran Political and Economic Affairs, Office of Central American Affairs, Bureau of Inter-American Affairs, Department of State, August 1966–June 1968
- Warnke, Paul C., Assistant Secretary of Defense for International Security Affairs from August 1, 1967
- Watson, W. Marvin, Jr., Special Assistant to the President February 1965–April 1968
- Webster, Bethuel M., U.S. mediator in dispute between Guatemala and the United Kingdom over the status of British Honduras (Belize) October 1965–September 1968
- Weissman, H. Andre, Deputy Director, Office of Brazilian Affairs, Bureau of Inter-American Affairs, Department of State, until November 1965
- Wheeler, General Earle G., USA, Chairman of the Joint Chiefs of Staff from July 3, 1964
- Whiteman, Marjorie M., Assistant Legal Adviser for Inter-American Affairs, Department of State, until June 1965
- Wiggins, Guy A., Officer-in-Charge of Guatemalan Political and Economic Affairs, Office of Central American Affairs, Bureau of Inter-American Affairs, Department of State, from February 1968
- Williams, G. Mennen, Assistant Secretary of State for African Affairs until March 23, 1966
- Williams, Murat W., Deputy Director for Coordination, Bureau of Intelligence and Research, Department of State, September 1964–June 1965
- Williams, William L. S., Deputy Director, Office of Bolivian-Chilean Affairs, Bureau of Inter-American Affairs, Department of State, July 1964–July 1966
- Wilson, Donald M., Deputy Director of the United States Information Agency until August 1, 1965
- Wilson, Henry H., Jr., Administrative Assistant to the President until May 1967
- Wilson, James Harold, Prime Minister of the United Kingdom from October 17, 1964
- Wolfe, Gregory B., Director, Office of Research and Analysis for American Republics, Bureau of Intelligence and Research, Department of State, August 1964–August 1968
- Woodward, Robert F., Special Adviser, Office of Inter-Oceanic Negotiations, Bureau of Inter-American Affairs, Department of State, May 1965–July 1967
- Yerovi Indaburú, Clemente, President of Ecuador March 29–November 16, 1966
- Zavala Ortiz, Miguel Ángel, Foreign Minister of Argentina until June 28, 1966
- Zúñiga Augustinius, Ricardo, leader of the Partido Nacional in Honduras; Secretary of Government in Honduras until June 1965; thereafter Minister of the Presidency