Principal Officers and Chiefs of Mission, by year: 1823
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)
- Allen, Heman (1779-1852)
- Minister Plenipotentiary, Chile (1823-1827)
- Anderson, Richard Clough (1788-1826)
- Minister Plenipotentiary, Colombia (1823-1826)
- Brent, Daniel Carroll (1770-1841)
- Secretary of State ad interim (1825)
- Chief Clerk (1817-1833)
- Brown, James (1766-1835)
- Envoy Extraordinary and Minister Plenipotentiary, France (1823-1829)
- Chargé d'Affaires, Portugal (1849-1850)
- *Dearborn, Henry Mark Valpey (1913-)
- Envoy Extraordinary and Minister Plenipotentiary, Portugal (1822-1824)
- Dearborn, Henry (1751-1829)
- Envoy Extraordinary and Minister Plenipotentiary, Portugal (1822-1824)
- Everett, Alexander Hill (1790-1847)
- Chargé d'Affaires, Netherlands (1818-1824)
- Envoy Extraordinary and Minister Plenipotentiary, Spain (1825-1829)
- Commissioner, China (1845-1847)
- Forsyth, John (1780-1841)
- Minister Plenipotentiary, Spain (1819-1823)
- Secretary of State (1834-1841)
- Gallatin, Albert (1761-1849)
- Envoy Extraordinary and Minister Plenipotentiary, France (1815-1823)
- Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1826-1827)
- Hughes, Christopher (1786-1849)
- Chargé d'Affaires, no se (1819-1825)
- Chargé d'Affaires, Netherlands (1825-1830)
- Chargé d'Affaires, Sweden (1830-1841)
- Chargé d'Affaires, Netherlands (1842-1845)
- Jackson, Andrew (1767-1845)
- Envoy Extraordinary and Minister Plenipotentiary, Mexico (1823)
- Middleton, Henry (1770-1846)
- Envoy Extraordinary and Minister Plenipotentiary, Russia (1820-1830)
- Nelson, Hugh (1768-1836)
- Minister Plenipotentiary, Spain (1823-1825)
- Rodney, Caesar Augustus (1772-1824)
- Minister Plenipotentiary, Argentina (1823-1824)
- Rush, Richard (1780-1859)
- Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1818-1825)
- Secretary of State ad interim (1817)
- Envoy Extraordinary and Minister Plenipotentiary, France (1847)