?Charles F. Koehler (1902-1905)
George W. Nash (1905-1914)
Willis E. Johnson (1914-1919)
Harold W. Foght (1919-1927)
Arthur H. Seymour (1927-1928)*
David A. Anderson (1928-1933)
Carl G. Lawrence (1933-1939)
N. E. Steele (1939-1951)
Warren C. Lovinger (1951-1956)
?J. Howard Kramer (1956-1968)
?Norbert K. Baumgart (1968-1976)
Lester A. Clarke (1976-1977)*
Joseph M. McFadden (1977-1982)
Terence M. Brown (1982-1992)
Thomas O. Flickema (1992–1993)*
John M. Hutchinson (1993-1997)
John M. Hilpert (1997-2003)
Don A. Cozzetto (2003-2004)*
?Patrick J. Schloss (2004-2008)
?Laurie S. Nichols (2008-2009)*
?James M. Smith (2009-2016)
Timothy Downs (2016-2021)
Veronica Paulson (2021)*
Neal H. Schnoor (2022-2025)
*Acting or interim