This is a list of the heads of the diplomatic representatives of Romania to the United States. Italics indicate ad-interim representatives.
Legation
- Constantin Angelescu, January 15, 1918
- Nicolae Henrik Lahovary, March 16, 1918
- Antoine Bibesco, February 25, 1921
- Frederick Nano,[1][2] February 24, 1926
- Radu T. Djuvara, April 9, 1926
- George Cretziano, November 15, 1926
- Charles A. Davila, October 15, 1929
- Mircea Victor Babeș, February 1, 1938
- Radu Irimescu, April 11, 1938 / April 21, 1938
- Brutus Coste, October 15, 1940
- Vasile Stoica May 27, 1941
December 12, 1941 – September 20, 1946: State of War
- Mihai Ralea, appointed September 20, 1946; October 1, 1946
- Mihai Magheru, appointed September 21, 1949; September 26, 1949
- Marin Florea Ionescu, appointed April 15, 1953; May 4, 1953
- Anton Moisescu, appointed November 26, 1954; December 7, 1954
- Silviu Brucan, appointed April 9, 1956; April 30, 1956
- George Macovescu, appointed August 12, 1959; August 21, 1959
- Petre Bălăceanu [ro], December 12, 1961