- July 1963 – July 1967: Roscoe Rouse (director)
- July 1, 1967 – July 1, 1972: Ruben Weltsch (director)
- July 1972 – February 1974: Joseph Gantner (acting director)
- March 1, 1974 – July 16, 1997: John Brewster Smith (dean and director)
- August 1, 1996 – December 18, 1999: Joseph J. Branin (dean and director)
- December 20, 1999 – August 1, 2000: Charles W. Simpson (interim dean and director)
- August 1, 2000 – November 1, 2010: E. Christian Filstrup (dean and director)
- December 2010 – January 27, 2013: Andrew White (interim dean and director)
- January 28, 2013 – October 1, 2013: Daniel Kinney (interim dean and director)
- October 1, 2013 – July 31, 2018: Constantia Constantinou (dean)
- August 1, 2018 – September 14, 2022: Shafeek Fazal (interim dean)
- September 15, 2022 – Karim Boughida (dean)
East Campus (Health Sciences Library)
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1969 – 1973: Emil F. Frey (director)
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1973: Mary Winkels (acting director)
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1973 – 1979: Mary Winkels (director)
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1979 – 1994: Ruth Marcolina (director)
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1994 – 2008: Spencer Marsh (director)
- 2008 – 2009: Moisés Eisenberg (interim director)
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2009: Andrew White (director)
*Note: after 2009, the West Campus and East Campus libraries merged as the University Libraries.*