- Kappa Alpha Theta, Beta Lambda Chapter Records, 1921/2005, bulk 1930/19903
- Kappa Alpha, Alpha Zeta Chapter Records, 1915/1966, bulk 1948/20082
- Kappa Delta Composites, 1982/20173
- Kappa Kappa Gamma (Gamma Kappa Chapter) Records, 1923/20145
- Kappa Kappa Psi Records, 1958/2009, bulk 1979/200920
- Katharine Gregg Papers, 1972/20032
- Katherine G. Johnson, Mathematician, Papers, 1800/2024, bulk 2016/202118
- Katherine Williams, Collector, Williams Family Papers, 1840/20053
- Kathleen Bonnie Crispin Worsham papers, 1860/20184
- Kathryn Belle McGee Records regarding Rhododendron Girls State School at Jackson's Mill, 1941/2003, bulk 1941/19873
- Kenneth Crispell papers, 1904/20211
- Kenneth E. Sensabaugh Papers, 1944/2009, bulk 1944/19543
- Kenneth Fones-Wolf, Historian, Research Papers Regarding Confederacy Supporters in Wheeling, 1819/2004, bulk 1850/18701
- Kenneth Fones-Wolf, Historian, Research Papers Regarding Glass Industry Towns in West Virginia, 1874/20051
- Kenneth Kreider, Artist, Illustrations and Prints, 1981/20121