U.S. Diplomatic chiefs of mission to Vatican City
Jacob L. Martin (Charge d'Affaires to the Papal States 1848)
Lewis Cass, Jr. (Charge d'Affaires to the Papal States 1849-54)
Lewis Cass, Jr. (Minister to the Papal States 1854-58)
John P. Stockton (Minister to the Papal States 1858-61)
Alexander W. Randall (Minister to the Papal States 1861-63)
Richard Milford Blatchford (Minister to the Papal States 1862)
Rufus King (Minister to the Papal States 1863)
none, 1864-68
D. Maitland Armstrong (Charge d'Affaires to the Papal States 1869)
none, 1870-1940
Harold H. Tittmann, Jr. (Charge d'Affaires to the Vatican 1941-44)
none, 1945-83
William A. Wilson (Ambassador to the Vatican 1984-86)
Frank Shakespeare (Ambassador to the Vatican 1986-89)
Thomas Patrick Melady (Ambassador to the Vatican 1989-93)
Raymond L. Flynn (Ambassador to the Vatican 1993-97)
Corinne C. Boggs (Ambassador to the Vatican 1997-2001)
James Nicholson (Ambassador to the Vatican 2001)