Collection
- Hope Larson collection, 2005-2013, Date acquired: 00/00/20141
- Howard Schnellenberger Photographs Collection, 1998-20111
- Hugh M. Coachman, Jr. Collection, 1950-20211
- Iain Lawrence collection, 1970-20201
- J.L. Reed and Son photograph collection, 1938-20131
- Jacksonville Port Authority (JAXPORT) Collection, 1989-20121
- Jacksonville Symphony Orchestra (Jacksonville, Florida) Collection, 1961-20121
- Jacksonville, Florida, Historical Newspapers Collection, 1890-20121
- Jaffe Family Archives, 1881-2012, bulk 1940-20121
- James E. Shepherd Jr. Papers, 1965-20151
- James J. Harkins collection, 1970-2016, Date acquired: 00/00/20161
- James and Joanna Tokley papers, 1920-2010, 2011-101
- Jim Ellis Collection, 1885-19991
- Joel Strack papers, 1989-20191
- John Carpenter collection, 1957-2018, Date acquired: 00/00/20181
- John T. Dizer papers, 1853-2007, Date acquired: 00/00/20071
- John W. Senders Working Collection, 1880-20141
- Joseph Caltagirone papers, 1940-20231
- Juan Martinez Collection, bulk 1955-20131
- Judith and Warren Kaplan Collection, Women's and Gender Studies, 1792-2016, bulk 1900-20001