List of Ambassadors of the United States to the United Nations

Role and responsibilities

The ambassador speaks for the United States within the UN system, casts votes in the Security Council and General Assembly, and engages in daily diplomacy with representatives from other countries. Duties include briefing Washington on developments at the UN, proposing and negotiating language in resolutions, participating in committee work, and addressing the media. Depending on the administration, the post may carry Cabinet rank or close access to the president and national security officials.

History and notable holders

The office has been held by career diplomats, political appointees, and former elected officials. Some holders became highly visible public figures or later served in other senior positions. Notable ambassadors have included Adlai Stevenson, a prominent mid-20th century envoy known for his debates at the Security Council; former President George H.W. Bush who served before his vice-presidency; Jeane Kirkpatrick and Madeleine Albright, both influential in shaping U.S. multilateral policy; and more recent envoys such as Susan Rice, Nikki Haley, and John R. Bolton, each leaving distinct policy marks.

Selection, confirmation and rank

Ambassadors to the UN are nominated by the President of the United States and require confirmation by the U.S. Senate. The nominee is typically a seasoned diplomat or a political appointee with foreign policy experience. Whether the ambassador holds Cabinet-level status depends on the president’s designation; some administrations have elevated the post to cabinet rank, increasing its domestic policy visibility.

Importance and distinctions

The U.S. ambassador to the UN plays a central role in multilateral diplomacy, crisis response, peacekeeping decisions, and international norm-setting. The position differs from U.S. ambassadors to individual countries because it focuses on collective decision-making in a forum of nearly universal membership. The office often balances domestic political priorities with complex international coalitions, making it a strategically significant and sometimes contentious appointment. The incumbent as of early 2021 is Linda Thomas-Greenfield, who has led diplomatic engagement on key global issues since her swearing-in.

• Representative office: U.S. Mission to the United Nations
• Historic figures: Adlai Stevenson, Jeane Kirkpatrick, Madeleine Albright
• Recent notable envoys: Susan Rice, John R. Bolton, Nikki Haley