Past Presidents
Acting Presidents
- John A. Alexander, July 1, 1997–July 31, 1997
- Gregory N. Brown, Feb. 24, 1992–March 30, 1992
- Kenneth W. Allen, July 26, 1979–Aug. 24, 1980
- Winthrop C. Libby, July 1, 1968–April 16, 1969
- Joseph M. Murray, March 1, 1958–June 30, 1958
- Harold Sherburne Boardman, Sept. 1, 1925–June 12, 1926
- Governed by Joint Committee, Aug. 6, 1921–April 7, 1922
- James Norris Hart, Sept. 1, 1910–Dec. 31, 1910 and (Uncertain)–Dec. 31, 1901
- Merritt Caldwell Fernald, July 15, 1868–Aug. 31, 1871
Interim Presidents
- Robert A. Kennedy, Aug. 16, 2004–April 15, 2005
- John C. Hitt, July 1, 1991–Feb. 23, 1992