| Post: | Ambassador |
| Body: | the United States to Cambodia |
| Native Name: | Central Khmer: ឯកអគ្គរដ្ឋទូតនៃសហរដ្ឋអាមេរិកប្រចាំនៅកម្ពុជា |
| Insignia: | US Department of State official seal.svg |
| Insigniasize: | 120px |
| Insigniacaption: | Seal of the United States Department of State |
| Incumbent: | Bridgette L. Walker Chargé d'Affaires ad interim[1] |
| Incumbentsince: | August 12, 2024 |
| Nominator: | President of the United States |
| Appointer: | The President |
| Appointer Qualified: | with Senate advice and consent |
| Inaugural: | Donald R. Heath as Envoy Extraordinary and Minister Plenipotentiary |
| Website: | U.S. Embassy – Phnom Penh |
This is a list of ambassadors of the United States to Cambodia.
Until 1953 Cambodia had been French protectorate as a part of French Indochina, but became independent on November 9, 1953. The United States had appointed its first envoy to Cambodia, Donald R. Heath, in 1950. Heath was a non-resident minister who was commissioned to Cambodia, Laos, and Vietnam, while resident in Saigon.
Diplomatic relations between Cambodia and the United States were broken twice: The first time between 1965 and 1969, and the second time in 1975 just before the Pol Pot regime gained control of the country. Relations were finally restored in 1991.
The U.S. Embassy in Cambodia is located in Phnom Penh.
| Name | Portrait | Appointed | Presentation of credentials | Termination of mission | President |
|---|---|---|---|---|---|
| June 29, 1950 | July 11, 1950 | October 2, 1954 | |||
| August 18, 1954 | October 2, 1954 | October 15, 1956 | |||
| October 11, 1956 | December 7, 1956 | March 8, 1959 | |||
| February 16, 1959 | April 23, 1959 | June 8, 1962 | |||
| June 28, 1962 | August 20, 1962 | March 3, 1964 | John F. Kennedy | ||
| Randolph A. Kidder[2] | July 9, 1964 | did not present credentials | September 18, 1964 | Lyndon B. Johnson | |
| Office vacant from 1964 to 1970. | |||||
| September 3, 1970 | September 15, 1970 | September 5, 1973 | |||
| March 14, 1974 | April 3, 1974 | April 12, 1975 | |||
| Office vacant from 1975 to 1994. | |||||
| May 13, 1994 | May 17, 1994 | November 20, 1995 | |||
| December 12, 1995 | March 28, 1996 | July 25, 1999 | |||
| June 7, 1999 | August 31, 1999 | May 16, 2002 | |||
| November 15, 2002 | January 4, 2003 | July 11, 2005 | |||
| June 27, 2005 | September 22, 2005 | December 25, 2008 | |||
| October 24, 2008 | January 20, 2009 | September 29, 2011 | |||
| April 2, 2012 | June 8, 2012 | August 14, 2015 | |||
| September 14, 2015 | December 2, 2015 | November 28, 2018 | |||
| W. Patrick Murphy | August 8, 2019 | October 19, 2019 | May 18, 2024 | ||
| Joe Biden | |||||
| Robert W. Forden (nominee) | Pending U.S. Senate confirmation | – | – | ||