Principal Officers and Chiefs of Mission, by year: 1800
Note: Career Foreign Service appointees are asterisked.
- Adams, John Quincy (1767-1848)
- Minister Resident, Netherlands (1794-1797)
- Minister Plenipotentiary, Portugal (1796)
- Minister Plenipotentiary, Germany (1797-1801)
- Minister Plenipotentiary, Russia (1809-1814)
- Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1815-1817)
- Secretary of State (1817-1825)
- Humphreys, David (1752-1818)
- Minister Resident, Portugal (1791-1797)
- Minister Plenipotentiary, Spain (1796-1801)
- King, Rufus (1755-1827)
- Minister Plenipotentiary, United Kingdom (1796-1803)
- Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1825)
- Marshall, John (1755-1835)
- Secretary of State (1800-1801)
- Secretary of State ad interim (1801)
- Lee, Charles (1758-1815)
- Secretary of State ad interim (1800)
- Murray, William Vans (1760-1803)
- Minister Resident, Netherlands (1797-1801)
- Minister Plenipotentiary, France (Not commissioned; nomination superseded by a nomination of Murray and two others
to serve on a joint commission.)
- Pickering, Timothy (1745-1829)
- Secretary of State ad interim (1795)
- Secretary of State (1795-1800)
- Smith, William Loughton (1758-1812)
- Minister Plenipotentiary, Portugal (1797-1801)
- Wagner, Jacob (?-?)