This is a list of ambassadors from the United States.
The incumbent's names change from time to time, sometimes a post starts or stops being temporarily headed by a lower ranking diplomat. Occasionally a post is created or abolished.
Currently ambassadors from the United States are accredited to the host governments of :
| Host organization | Location | Name |
|---|---|---|
| Conference on Disarmament | Geneva, Switzerland | Jackie Wolcott Sanders |
| European Union | Brussels, Belgium | Rockwell Anthony Schnabel |
| International Civil Aviation Organization | Montreal, Canada | Edward W. Stimpson |
| North Atlantic Treaty Organisation | Brussels, Belgium | R. Nicholas Burns |
| Organisation for Economic Co-operation and Development | Paris, France | Constance A. Morella |
| Organization for Security and Cooperation in Europe | Vienna, Austria | Stephan M. Minikes |
| Organization of American States | Washington, DC, United States | John Maisto |
| United Nations | New York, United States | John R. Bolton (recess appointment) |
| United Nations Agencies for Food and Agriculture | Rome, Italy | Tony P. Hall |
| United Nations Environment Programme | Nairobi, Kenya | Johnnie Carson |
| United Nations International Organizations in Vienna | Vienna, Austria | Kenneth C. Brill |
| Title (competence) | Name |
|---|---|
| Ambassador-at-Large for War Crimes Issues | Pierre-Richard Prosper |
| Ambassador-at-Large for Counterterrorism | J. Cofer Black |
| Host country | Name | Title |
|---|---|---|
| Bahamas | Robert M. Witajewski | Chargé d'Affaires |
| Belgium | Brenda B. Schoonover | Chargé d'Affaires |
| Nigeria | Rick L. Roberts | Chargé d'Affaires |
| Syria | Gene A. Cretz | Chargé d'Affaires |
| Taiwan | Douglas H. Paal | Director of the Taipei office of the American Institute in Taiwan |
| Tanzania | Michael S. Owen | Chargé d'Affaires |
