Collection
- Charna Larkin World's Fair Collection, 1849 - 1993, bulk 1893 - 19641
- Christopher M. Still collection, 1978-2007, Date acquired: 09/05/2006, bulk 1978-20071
- Church of Jesus Christ of Latter Day Saints Records, 1978-2005, Date acquired: 06/00/20061
- Cinema Corporation of America Collection, 1925-1981, bulk 1925-19321
- Citizens Bancorp of Oviedo Inc. Oviedo History collection, 1936-20191
- Citizens Bancorp of Oviedo Inc. records, 1946-20201
- Citrus Park Colored School collection, 1921-1996, 1996-11-201
- Clarke Family Papers Collection, 1840-1998, bulk 1841-19161
- Clarke M. Brandt collection, 1939-2003, Date acquired: 10/29/2002, bulk 19431
- Claude Pepper Papers, 1900-19891
- Clinton Mack Jr. Collection, Circa 1920-1960, 19981
- Colegio del Apostolado, bulk 1935-20221
- Colleen Lunsford Bevis collection, 1966-2000, Date acquired: 01/01/2000, bulk 1971-19951
- College of Music Historical Scrapbooks Collection, 1911-20021
- College of Music Reel-to-Reel Recordings, 1955-19851
- College of Nursing, 1948-2020, Date acquired: 12/05/20141
- Commander Melville J. Walters Jr. Operation Deep Freeze III Antarctic research collection, 1901-19881
- Commemorative Coca-Cola Bottles and Jewelry, 1958-19941
- Contracts Private Industry. Collective Bargain, bulk 1969-19931
- Corral, Wodiska y Ca. Cigar Factory records, 1911-1987, Date acquired: 00/00/20151