Principal Officers and Chiefs of Mission, by year: 1827
Note: Career Foreign Service appointees are asterisked.
- Allen, Heman (1779-1852)
- Minister Plenipotentiary, Chile (1823-1827)
- Appleton, John James (1792-1864)
- Chargé d'Affaires, Sweden (1826-1830)
- Chargé d'Affaires, Portugal (Not commissioned; nomination to be Chargé d'Affaires at Rio de Janeiro rejected by
the Senate. Appleton, however, served as Chargé d'Affaires ad interim from Jun 1820
until the Legation to Portugal at Rio de Janeiro was closed in 1821 (his last
dispatch dated Jul 12, 1821).)
- Clay, Henry (1777-1852)
- Secretary of State (1825-1829)
- Envoy Extraordinary and Minister Plenipotentiary, Spain (1909-1913)
- Brent, Daniel Carroll (1770-1841)
- Secretary of State ad interim (1825)
- Chief Clerk (1817-1833)
- Brent, Thomas Ludwell Lee (1784-1847)
- Chargé d'Affaires, Portugal (1825-1834)
- Brown, James (1766-1835)
- Envoy Extraordinary and Minister Plenipotentiary, France (1823-1829)
- Chargé d'Affaires, Portugal (1849-1850)
- Cooley, James (1791-1828)
- Chargé d'Affaires, Peru (1826-1828)
- Everett, Alexander Hill (1790-1847)
- Chargé d'Affaires, Netherlands (1818-1824)
- Envoy Extraordinary and Minister Plenipotentiary, Spain (1825-1829)
- Commissioner, China (1845-1847)
- Forbes, John Murray (1771-1831)
- Chargé d'Affaires, Argentina (1825-1831)
- 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)
- Middleton, Henry (1770-1846)
- Envoy Extraordinary and Minister Plenipotentiary, Russia (1820-1830)
- Raguet, Condy (1784-1842)
- Chargé d'Affaires, Brazil (1825-1827)
- Rochester, William Beatty (1789-1838)
- Chargé d'Affaires, Guatemala (1827)
- Tudor, William (1779-1830)
- Chargé d'Affaires, Brazil (1827-1830)
- Watts, Beaufort T. (?-?)
- Chargé d'Affaires, Colombia (1827)
- Wheaton, Henry (1785-1848)
- Chargé d'Affaires, Denmark (1827-1835)
- Chargé d'Affaires, Germany (1835)
- Envoy Extraordinary and Minister Plenipotentiary, Germany (1837-1846)