Chiefs of Mission for Holy See
- Jacob L. Martin (1848-1848)
- Lewis Cass (1849-)
- Lewis Cass (1854-1858)
- John Potter Stockton (1858-1861)
- Rufus King (1861-)
- Alexander Williams Randall (1861-1862)
- Richard Milford Blatchford (1862-1863)
- Rufus King (1863-1867)
- Harold Hilgard Tittmann (-1944)
- William A. Wilson (1984-1986)
- Frank J. Shakespeare (1986-1989)
- Thomas Patrick Melady (1989-1993)
- Raymond Leo Flynn (1993-1997)
- Corinne Clairborne Boggs (1997-2001)
- James (Jim) Nicholson (2001-2005)
- Francis Rooney (2005-)
- Mary Ann Glendon (2007-2009)
- Miguel Humberto Diaz (2009-)
- Mark Wayne Clark (-)
- David Armstrong (-)
- David Walters (-)
- Myron Charles Taylor (-)
- Myron Charles Taylor (-)