Source: •
Seaman A. Knapp 1879–1885) •
James Wilson (1897–1902) •
Charles F. Curtiss (1902–1932) •
Raymond M. Hughes - interim (1932–1933) •
Henry Herbert Kildee (1933–1949) •
Floyd Andre (1949–1972) •
Marvin A. Anderson - interim (1972–1973) •
Lee Kolmer (1973–1987) •
John Pesek - interim (1987–1988) •
David Topel (1988–2000) •
Richard F. Ross (2000–2002) •
Catherine Woteki (2002–2005) •
Wendy Wintersteen (2005–2017) •
Joe Coletti - interim (2017–2019) •
Daniel Robison (since 2019) ==Recruitment==