Principal Officers and Chiefs of Mission, by Year: 1857

Note: Career Foreign Service appointees are asterisked.

• Benjamin Franklin Angel (1815–1894)
  • Minister Resident, Sweden (1857–1861)
• John Appleton (1815–1864)
  • Chargé d’Affaires, Bolivia (1848–1849)
  • Chief Clerk (1848)
  • Assistant Secretary of State (1857–1860)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1860–1861)
• Henry Bedinger (1812–1858)
  • Chargé d’Affaires, Denmark (1853–1854)
  • Minister Resident, Denmark (1854–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Denmark (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• August Belmont (1816–1890)
  • Chargé d’Affaires, Netherlands (1853–1854)
  • Minister Resident, Netherlands (1854–1857)
  • Envoy Extraordinary and Minister Plenipotentiary, Netherlands (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• John Bigler (1805–1871)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (1857–1861)
• James Butler Bowlin (1804–1874)
  • Minister Resident, Colombia (1854–1857)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Lewis Cass (1782–1866)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1836–1842)
  • Secretary of State (1857–1860)
• Lewis Cass Jr. (1814–1878)
  • Chargé d’Affaires, Holy See (1849–1854)
  • Minister Resident, Holy See (1854–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Holy See (Nomination of February 25, 1856, withdrawn before the Senate acted upon it. Nominated to the Pontifical States.)
• John Randolph Clay (1808–1885)
  • Chargé d’Affaires, Russia (1836–1837)
  • Chargé d’Affaires, Peru (1847–1853)
  • Envoy Extraordinary and Minister Plenipotentiary, Peru (1853–1860)
  • Minister Resident/Consul General, Liberia (Not commissioned; nomination not confirmed by the Senate.)
• George Mifflin Dallas (1792–1864)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1837–1839)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1856–1861)
• John Winchester Dana (1808–1867)
  • Chargé d’Affaires, Bolivia (1853–1854)
  • Minister Resident, Bolivia (1854–1859)
  • Envoy Extraordinary and Minister Plenipotentiary, Bolivia (Nominated on February 25, 1856; nomination withdrawn before the Senate acted upon it.)
• John Moncure Daniel (1825–1865)
  • Chargé d’Affaires, Italy (1853–1854)
  • Minister Resident, Italy (1854–1861)
  • Envoy Extraordinary and Minister Plenipotentiary, Italy (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Edwin De Leon (1818–1891)
  • Agent/Consul General, Egypt (1853–1861)
• Augustus Caesar Dodge (1812–1883)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1855–1859)
• Charles Eames (1812–1867)
  • Chargé d’Affaires, Venezuela (1854)
  • Minister Resident, Venezuela (1854–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Venezuela (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Henry William Ellsworth (1814–1864)
  • Chargé d’Affaires, Sweden (1845–1861)
• Theodore Sedgwick Fay (1807–1898)
  • Minister Resident, Switzerland (1853–1861)
  • Envoy Extraordinary and Minister Plenipotentiary, Switzerland (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• John Forsyth (1812–1877)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1856–1858)
• David Lawrence Gregg (1814–1868)
  • Commissioner, Hawaii (1853–1858)
• Henry Rootes Jackson (1820–1898)
  • Chargé d’Affaires, Austria (1853–1854)
  • Minister Resident, Austria (1854–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1885–1886)
• Mirabeau Buonaparte Lamar (1798–1859)
  • Minister Resident, Argentina (1857)
  • Envoy Extraordinary and Minister Plenipotentiary, Nicaragua (1857)
  • Minister Resident, Costa Rica (1858–1859)
  • Minister Resident, Nicaragua (1858–1859)
• William Learned Marcy (1786–1857)
  • Secretary of State (1853–1857)
• John Young Mason (1799–1859)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1853–1859)
• Richard Kidder Meade (1803–1862)
  • Chargé d’Affaires, Italy (1853)
  • Envoy Extraordinary and Minister Plenipotentiary, Brazil (1857–1861)
• Henry Cruse Murphy (1810–1882)
  • Minister Resident, Netherlands (1857–1861)
• John Louis O’Sullivan (1813–1895)
  • Chargé d’Affaires, Portugal (1854)
  • Minister Resident, Portugal (1854–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Portugal (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Robert Dale Owen (1801–1877)
  • Chargé d’Affaires, Kingdom of the Two Sicilies (1853–1854)
  • Minister Resident, Kingdom of the Two Sicilies (1854–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Kingdom of the Two Sicilies (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Peter Parker (1804–1888)
  • Chargé d’Affaires ad interim, China (1853)
  • Commissioner, China (1855–1857)
• James A. Peden (?–?)
  • Minister Resident, Argentina (1854–1857)
  • Chargé d’Affaires, Argentina (1854)
  • Minister Resident, Argentina (1856–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Argentina (1856)
• William Bradford Reed (1806–1876)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1857–1858)
• Francis Schroeder (1814–1886)
  • Chargé d’Affaires, Sweden (1849–1854)
  • Minister Resident, Sweden (1854–1857)
• Thomas Hart Seymour (1807–1868)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1853–1858)
• Carroll Spence (1818–1896)
  • Minister Resident, Turkey (1853–1857)
  • Envoy Extraordinary and Minister Plenipotentiary, Turkey (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• David Austin Starkweather (1802–1876)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (1854–1857)
• John Addison Thomas (1811–1858)
  • Assistant Secretary of State (1855–1857)
• William Trousdale (1790–1872)
  • Envoy Extraordinary and Minister Plenipotentiary, Brazil (1853–1857)
• William Edward Venable (1804–1857)
  • Minister Resident, Guatemala (1857)
• Peter Dumont Vroom (1791–1873)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1853–1857)
• Philo White (1796–1874)
  • Chargé d’Affaires, Ecuador (1853–1854)
  • Minister Resident, Ecuador (1854–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Ecuador (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Joseph Albert Wright (1810–1867)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1857–1861)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1865–1867)