Collection
- Office of the President -- Dr. Anthony J. Catanese, 1990-2002, bulk 1990-20021
- Old Florida Structure photographs, 1971-20021
- Olga Hanlon family collection, 1940-20141
- Oliver Luther Austin Collection, 1945-2013, Date accessioned: 2013-11-13, bulk 1945-19521
- Orlando Gay Chorus collection, 1990-20181
- Orlando Shakespeare Theater Collection, 1974-2013, bulk 1986-20091
- Otis R. Anthony collection, 1977-2009, 2008-11, bulk 1977-19791
- Papers of Gabriel Cazares, 1930-20001
- Papers of Hazel T. Evans, bulk 1950-20001
- Papers of Norman E. Jones, Sr., bulk 1950s-1990s1
- Paul Curtis Koerner collection, 1937-2003, Date acquired: 2006-06-14, Date accessioned: 2016-06-141
- Paul K. Dougherty collection, 1942-2000, Date acquired: 03/26/1997, bulk 1942-19451
- Paul W. Danahy, Jr. papers, 1950-1996, Date acquired: 05/01/1992, bulk 1965-19781
- Paul Wimbish Collection, 1927-20041
- Paul and Leonard Gordy collection, 1946-2012, Date acquired: 07/23/2015, Date accessioned: 2020-06-081
- Paul and Mary Rosen Collection, Circa 1900-20001
- Peter Belmont Preserve the 'Burg Collection, bulk 1980-20201
- Philip Lester Brinson collection, 1940-19941
- Phillip Spurgeon Collection, 1972-20201
- Phyllis J. Hudson Collection, 1966-20061