| Date | Visitor | Country | Description |
| January 10-12, 1984 | Premier Zhao Ziyang | China, Peoples' Republic of | Official visit. In U.S. January 7-16; visited Honolulu (Hawaii), Williamsburg (Virginia), San Francisco, and New York City. |
| January 17-20, 1984 | Prime Minister Mahathir bin Muhammad | Malaysia | Official working visit. Private visit to Tulsa (Oklahoma) afterward. |
| January 19-20, 1984 | Prime Minister Rudolphus F. M. (Ruud) Lubbers | Netherlands | Private visit. Met with President Reagan January 19. |
| January 31-February 2, 1984 | President Mika Spiljak | Yugoslavia | Official working visit. Private visit to Los Angeles February 3-4 |
| February 1-16, 1984 | Prime Minister Maria Eugenia Charles | Dominica | Private visit. Met with President Reagan February 3. |
| February 11-15, 1984 | President Hosni Mubarak | Egypt | Official working visit. |
| February 12-14, 1984 | King Hussein | Jordan | Official working visit. |
| February 14-18, 1984 | Prince Rainier | Monaco | Private visit. Met with President Reagan February 18. |
| February 22-25, 1984 | Prime Minister Robert D. Muldoon | New Zealand | Official working visit. |
| February 27-29, 1984 | President Rudolf Kirschschlaeger | Austria | State visit; visited New York City, Chicago, San Francisco, and Los Angeles. Departed U.S. March 5. |
| February 28-March 1, 1984 | Prime Minister Muhammad Karim Lamrani | Morocco | Official working visit. Private visit to New York City March 2. |
| March 3-6, 1984 | Chancellor Helmut Kohl | Germany, Federal Republic of | Official working visit. |
| March 13-16, 1984 | Prime Minister Mario Alberto Lopes Soares | Portugal | Official working visit. Private visit to New York City afterwards. |
| March 14-16, 1984 | Prime Minister Garret Michael Desmond FitzGerald | Ireland | Official working visit. Addressed Joint Session of U.S. Congress March 15. |
| March 21-24, 1984 | President Francois Mitterrand | France | State visit; visited Atlanta (Georgia), San Francisco, Chicago, Peoria (Illinois), Pittsburgh (Pennsylvania), and New York City. Departed U.S. March 28. |
| April 9-11, 1984 | President Salvador Jorge Blanco | Dominican Republic | State visit; visited Springfield (Illinois), Chicago, New York City, Columbia (South Carolina). Departed U.S. April 14. |
| April 12-14, 1984 | Prime Minister Prem Tinsulanonda | Thailand | Official working visit. Private visit to New York City afterwards. |
| May 7-10, 1984 | President Quett Ketumile Masire | Botswana | Official working visit. Private visit to New York City afterwards. |
| May 14-17, 1984 | President Miguel de la Madrid | Mexico | State visit. |
| May 19-24, 1984 | President-elect Jose Napoleon Duarte | El Salvador | Private visit. Met with President Reagan May 21. |
| June 17-20, 1984 | President Junius Richard Jayawardene | Sri Lanka | State visit. In U.S. June 16-23; visited Williamsburg (Virginia), Santa Fe (New Mexico), Niagara Falls, and New York City. |
| June 25-26, 1984 | President-elect Leon Febres Cordero | Ecuador | Private visit. Met with President Reagan June 26. |
| July 17-19, 1984 | Prime Minister Maria Eugenia Charles | Dominica | Attended meeting of Caribbean Heads of Government in Charleston (South Carolina). Met with President Reagan July 19. |
| July 17-19, 1984 | Chairman Nicholas Brathwaite | Grenada | Attended meeting of Caribbean Heads of Government in Charleston (South Carolina). Met with President Reagan July 19. |
| July 17-19, 1984 | Prime Minister Edward Seaga | Jamaica | Attended meeting of Caribbean Heads of Government in Charleston (South Carolina). Met with President Reagan July 19. |
| July 17-19, 1984 | Prime Minister Kennedy Alphonse Simmonds | St. Christopher and Nevis | Attended meeting of Caribbean Heads of Government in Charleston (South Carolina). Met with President Reagan July 19. |
| July 17-19, 1984 | Prime Minister John G. M. Compton | St. Lucia | Attended meeting of Caribbean Heads of Government in Charleston (South Carolina). Met with President Reagan July 19. |
| July 23, 1984 | President Jose Napoleon Duarte | El Salvador | Private visit. Met with President Reagan. |
| July 24-29, 1984 | President-elect Nicolas Ardito Barletta | Panama | Private visit. Met with President Reagan July 27. |
| September 23, 1984 | President Raul Ricardo Alfonsin | Argentina | Private visit. Met with President Reagan at UN General Assembly reception in New York City. |
| September 23, 1984 | President Mobutu Sese Seko | Zaire | Private visit. Met with President Reagan at UN General Assembly reception in New York City. |
| September 23, 1984 | Prime Minister Kaare I. Willoch | Norway | Private visit. Met with President Reagan at UN General Assembly reception in New York City. |
| September 24-25, 1984 | Prime Minister Martin Brian Mulroney | Canada | Official working visit. |
| September 25-27, 1984 | President Fernando Belaunde Terry | Peru | Private visit. Accompanied by Prime Minister Mariategui. Met with President Reagan September 27. |
| October 8-10, 1984 | Prime Minister Shimon Peres | Israel | Official working visit. |
| November 12-15, 1984 | Grand Duke Jean | Luxembourg | State visit; visited Colorado Springs (Colorado), San Jose, San Francisco, and Chicago. Departed U.S. November 19. |
| November 25-29, 1984 | Prime Minister Kamisese Mara | Fiji | Official working visit. Private visit to New York City afterward. |
| November 29-30, 1984 | Chancellor Helmut Kohl | Germany, Federal Republic of | Official working visit. |
| December 3-5, 1984 | President Jaime Lusinchi | Venezuela | State visit. Afterwards visited San Francisco. Departed U.S. December 8. |
| December 10-13, 1984 | President Seyni Kounche | Niger | Official Working Visit. Private visit afterwards to Columbus, Mississippi. |
| December 22, 1984 | Prime Minister Margaret Thatcher | United Kingdom | Private visit at Camp David, Maryland. |
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