Collection
- John B. Sozzio papers, 1944-2002, bulk 1944-19451
- John Carpenter collection, 1957-2018, Date acquired: 00/00/20181
- John F. Cawley Collection, 1944-2010, Date acquired: 06/19/00091
- John Irwin collection, 1942-1945, 20061
- John L. Ducker Collection, 1863-20071
- John L. Haynes collection, 1945-2007, Date acquired: 05/21/2007, bulk 2003-20071
- John MacKay Shaw Collection, 1737-20071
- Joil (Saul) Alpern transcript, 1940-2009, Date acquired: 02/27/20091
- Jose M. Colon Collection, 1945-20101
- Joseph G. Moretti collection, 1941-2000, Date acquired: 2000-03-201
- Joseph Jennings transcript, 1922-2008, Date acquired: 12/07/2001, bulk 1941-19451
- Juan Martinez Collection, bulk 1955-20131
- Juanita Pauline Marotta Collection, 1943-2006, Date accessioned: 2020-04-031
- Judith and Warren Kaplan Collection, Women's and Gender Studies, 1792-2016, bulk 1900-20001
- Justice R. Fred Lewis Florida Supreme Court Papers, 1998-20181
- Karen Howey Schmidt Ephemera collection, 1949-1959, Date acquired: 00/00/00001
- Katherine Moore Morse Collection, 1891 - 2007, bulk 1943 - 19471
- Ken Kazmerski collection, 1987-20101
- Ken van Assenderp Collection, 1963-20101
- Kennedy Collection, 1914-20111