- Kappa Delta Composites, 1982/20173
- Kappa Kappa Gamma (Gamma Kappa Chapter) Records, 1923/20145
- Karla K. Bruno Papers, 2007-2010, 2007/20101
- Katherine G. Johnson, Mathematician, Papers, 1800/2024, bulk 2016/202124
- Kathleen Bonnie Crispin Worsham papers, 1860/20183
- Kenneth Crispell papers, 1904/20211
- Kenneth Kreider, Artist, Illustrations and Prints, 1981/20121
- Kenneth R. White Papers, 1973/20201
- Kimiko Suzuki Architectural Collection,, 1963/20131
- Kluge Children's Rehabilitation Center records, 1952/20127
- Krasnow Institute for Advanced Study records, 1985/20158
- Kristine K. Fallon Papers, 1966/20183
- Kurt Richard Weimer letters, 1965/20171