- Stephen J. Field, Williams 1837, US Supreme Court Justice
- James Abram Garfield, Williams 1856, the second fraternity man to become President of the United States
- Justin L. Morrill, Middlebury 1860, United States Senator - Vermont; author of the land grant college act
- W.H.H. Miller, Hamilton 1861, Attorney General of the United States
- Daniel S. Lamont, Union 1872, Secretary of War
- Charles Evans Hughes, Colgate and Brown 1881, Governor - New York, US Vice President, Secretary of State, Chief Justice of Supreme Court
- Charles G. Dawes, Marietta 1884, Vice President of the United States and Ambassador to Great Britain; winner of the Nobel Prize for peace
- Arthur H. Vandenberg, Michigan '04, United States Senator, Michigan
- J. Arthur Clark, Toronto '06, President of the Canadian Bar Association
- Robert H. Lord, Harvard and Northwestern '06, adviser to the 1918 Versailles Peace Conference
- Amos J. Peaslee, Swarthmore '07, United States Ambassador to Australia
- W. W. Randolph Burgess, Brown '12, United States Ambassador to NATO
- Joseph P. Kennedy, Harvard '12, Ambassador to Great Britain, father of two Senators and a President
- Paul H. Douglas, Bowdoin '13, Senator - Illinois
- Sumner T. Pike, Bowdoin '13, President of the Atomic Energy Commission
- John L. Keddy, Hamilton '15, Curator of the Smithsonian Institute
- Matthew W. Hill, Washington '17, Chief Justice, Washington State Supreme Court
- Kenneth B. Keating, Rochester '19, United States Senator, New York; Ambassador to India; Ambassador to Israel; Brigadier General, United States Army
- Lester B. Pearson, Toronto '19, Prime Minister of Canada and President of the United Nations General Assembly; Nobel Prize winner for Peace
- David E. Lilienthal, DePauw '20, President of the Atomic Energy Commission
- Herbert Brownell, Nebraska '24, US Attorney General
- Clifford P. Case, Rutgers '25, Senator - New Jersey
- General David M. Shoup, DePauw '26, Commandant, US Marine Corps and Congressional Medal of Honor winner
- John M. Matthias, Ohio State '28, Justice, Ohio Supreme Court
- Frank R. Kenison, Dartmouth '29, Chief Justice, New Hampshire Supreme Court
- Winston L. Prouty, Lafayette '30, Senator - Vermont
- Foy D. Kohler, Ohio State '31, ambassador to the USSR
- William H. Avery, Kansas '34, Governor, State of Kansas
- Joseph L. Fisher, Technology '35, US Congressman, Virginia
- Robert T. Stafford, Middlebury '35, United States Congressman and Senator, Vermont
- George R. Hunter, Manitoba '37, Member of Parliament
- William C. O'Neill, Marietta and Ohio State '38, Governor, State of Ohio
- F. Ray Keyser, Jr., Tufts '50, Governor, State of Vermont
- Dr. G. William Whitehurst, Washington and Lee '50, United States Congressman from Virginia
- William H. Brown, Jr., Swarthmore '51, Parliamentarian, United States House of Representatives
- John B. Conlan, Northwestern '51, United States Congressman, Arizona
- Alan J. Dixon, Illinios '51, Senator - Illinios
- Thomas E. Morgan, Lafayette '58, United States Congressman, Pennsylvania
- John S. Herrington, Stanford '61, US Energy Secretary
- N. Lloyd Axworthy, Manitoba '63, Member of Parliament, Minister of Foreign Affairs
- Micheal D. Barnes, North Carolina '65, US Congressman, Maryland
- Anthony J. Moffat, Jr., Syracuse '66, United States Congressman, Connecticut
- Paul R. Ford, Middlebury '67, director of Amnesty International
- Les Aspin, Jr., Marquette '70, Congressman from Wisconsin and former Secretary of Defense
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