Recorder
1911–1918 William T. Olcott (Assisted by Leon Campbell after 1915)
Note: from 1918 to 1925 this function was handled by the Recording Secretary and Corresponding Secretary
1925–1949 Leon Campbell
1949–1956 Margaret W. Mayall
Director (title changed from Recorder in 1956)
1956–1973 Margaret W. Mayall
1973–2003 Janet A. Mattei (d. 22 March 2004)
2003–2005 Elizabeth O. Waagen (Interim Director September 2003–February 2005)
2005–2015 Arne A. Henden
2015– Stella Kafka
Corresponding Secretary
1911–1931 William T. Olcott
Recording Secretary
1918–1924 Howard O. Eaton (Assisted by Harvard College Observatory staff in most years)
1924–1925 Florence Cushman
Secretary
1931–1936 William Tyler Olcott (d. 6 July 1936; Charles W. Elmer filled Olcott's unexpired term)
1936–1937 Charles W. Elmer
1937–1945 David W. Rosebrugh
1945–1948 Herbert M. Harris
1948–1992 Clinton B. Ford (d. 23 September 1992)
1992–2005 Martha L. Hazen (d. 23 December 2006)
2005–2019 Gary Walker
2019– Kristine M. Larsen
Treasurer
1917–1921 Allen Burbeck
1921–1929 Michael Jordan (d. 22 Dec. 1929; Willard J. Fisher filled Jordan's unexpired term)
1929–1931 Willard J. Fisher
1931–1961 Percy W. Witherell
1961–1973 Richard H. Davis (resigned mid–term)
1973–1979 R. Newton Mayall
1979–1998 Theodore H. N. Wales
1998–2001 Wayne M. Lowder
2001–2006 Louis Cohen
2006–2008 David A. Hurdis
2008–2012 Gary W. Billings
2012-2014 Tim Hager
2014-2017 Bill Goff
2017– Robert Stephens
President
1917–1918 David B. Pickering
1918–1919 Harold C. Bancroft, Jr.
1919–1922 Leon Campbell
1922–1924 Anne S. Young
1924–1926 J. Ernest G. Yalden
1926–1927 Charles C. Godfrey
1927–1929 David B. Pickering
1929–1931 Alice H. Farnsworth
1931–1933 Harriet W. Bigelow
1933–1935 Ernest W. Brown
1935–1937 Harlow Shapley
1937–1939 Charles W. Elmer
1939–1941 Helen S. Hogg
1941–1943 Dirk Brouwer
1943–1945 Roy A. Seely
1945–1947 Charles B. Smiley
1947–1948 Marjorie Williams
1948–1949 David W. Rosebrugh
1949–1951 Neil J. Heines
1951–1954 Martha S. Carpenter
1954–1956 Cyrus F. Fernald
1956–1958 Richard W. Hamilton
1958–1960 Ralph N. Buckstaff
1961–1963 Dorrit Hoffleit
1963–1965 George Diedrich
1965–1967 Edward G. Oravec
1967–1969 Frank J. DeKinder
1969–1971 Casper H. Hossfield
1971–1973 Charles M. Good
1973–1975 Charles E. Scovil
1975–1977 George L. Fortier
1977–1979 Marvin E. Baldwin
1979–1981 Carl A. Anderson
1981–1983 Arthur J. Stokes
1983–1985 Ernst H. Mayer
1985–1987 Thomas R. Williams
1987–1989 Keith H. Danskin
1989–1991 John R. Percy
1991–1992 Martha L. Hazen
1992–1993 Thomas R. Williams
1993–1995 Wayne M. Lowder
1995–1997 Albert V. Holm
1997–1999 Gary Walker
1999–2001 Lee Anne Willson
2001–2003 Daniel H. Kaiser
2003–2005 William G. Dillon
2005–2007 David B. Williams
2007–2009 Paula Szkody
2009–2011 Jaime Garcia
2011–2013 Mario E. Motta
2013–2015 Jennifer (Jeno) Sokoloski
2015–2018 Kristine Larsen
2018–2020 Gordon Myers