*1896–1932 Wilder Dwight Bancroft, Joseph E. Trevor
*1933–1951 S. C. Lind
*1952–1964 William A. Noyes
*1965–1969 F. T. Wall
*1970–1980 Bryce Crawford
*1980–2004 Mostafa El-Sayed
*2005–2019 George C. Schatz
*2020–present Joan-Emma Shea