This is a list of the heads of the diplomatic representatives of Romania to the United States. Italics indicate ad-interim representatives.
- 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
- Petre Bălăceanu [ro], appointed July 27, 1964; August 14, 1964
- Corneliu Bogdan, appointed July 19, 1967; July 27, 1967
- Gheorghe Ioniță, appointed June 3, 1976
- Nicolae M. Nicolae, appointed June 18, 1976; July 9, 1976
- Ion Beșteliu, August 11, 1978
- Nicolae Ionescu, appointed October 3, 1978; November 16, 1978
- Eugen Popa, March 24, 1982
- Mircea Malița [ro], appointed April 30, 1982; June 25, 1982
- Nicolae Gavrilescu, appointed April 9, 1985; May 22, 1985
- Ion Stoichici, appointed September 28, 1987; October 20, 1987
- Virgil Constantinescu, appointed February 13, 1990; April 9, 1990
- Aurel-Dragoș Munteanu, appointed April 6, 1992; May 5, 1992
- Mihai Horia Botez, appointed September 20, 1994; November 21, 1994
- Mircea Dan Geoană, appointed February 1, 1996; February 6, 1996
- Sorin Dumitru Ducaru, appointed May 25, 2001; June 20, 2001
- Adrian Cosmin Vierița [ro], appointed January 2, 2008; January 22, 2008
- Iulian Buga [ro], appointed November 19, 2013; December 3, 2013
- George Cristian Maior, appointed September 1, 2015; September 17, 2015
- Andrei Muraru, appointed July 7, 2021
- ^ Collection, National Photo Company (1922), English: Title: Eftime Antonesco, Constantine Antonsades, 11/13/22; F. Nano in center, retrieved 2022-01-02
- ^ Humanities, National Endowment for the (1945-12-30). "Evening star. [volume] (Washington, D.C.) 1854-1972, December 30, 1945, Image 35". pp. B. ISSN 2331-9968. Retrieved 2022-01-02.