T
- Taine, John. See Bell, Eric Temple
- Tall, Stephen. See Crook, Compton.
- Tan, Cecilia. Cecilia Tan Papers. SFWA Collection, Rare Books and Special Collections, Northern Illinois University. Please contact curator for information on unprocessed materials. [see also: Circlet Press, Inc.]
- Tem, Steve Rasnic and Melanie. Steve Rasnic Tem and Melanie Tem Collection. Cushing Memorial Library & Archives. Texas A&M University.
- Tiptree, James Jr. (Alice Sheldon). Alice B. Sheldon, pen name James Tiptree, Jr., papers. Special Collections and University Archives. University of Oregon.
- Tolkien, J.R.R.
- Trimble, Jacqueline. Jacqueline Trimble papers. Special Collections and University Archives. University of Oregon.
- Trimble, Louis. Louis Trimble Manuscript. Special Collections. University of Maryland, Baltimore County.
- Tubb, E.C. E.C. Tubb Manuscripts. Special Collections. University of Maryland, Baltimore County.
- Tuck, Donald H. Manuscript Collection. Merril Collection of Science Fiction, Speculation and Fantasy. Toronto Public Library.
- Tucker, Wilson. Wilson Tucker Collection. Cushing Memorial Library & Archives. Texas A&M University.
- Tuttle, Lisa. Lisa Tuttle Collection. Cushing Memorial Library & Archives. Texas A&M University.