D
- Datlow, Ellen.
- Davenport, Guy. Guy Davenport Papers. Special Collections & University Archives, Tomás Rivera Library, University of California, Riverside.
- Davidson, Avram.
- Dean, Pamela. Pamela Dean Papers. SFWA Collection, Rare Books and Special Collections, Northern Illinois University.
- De Camp, L. Sprague.
- DeChancie, John. DeChancie (John) papers. Special Collections & University Archives, Tomás Rivera Library. University of California, Riverside.
- Del Rey, Lester. Lester Del Rey Collection. Cushing Memorial Library & Archives. Texas A&M University.
- Delany, Samuel R.
- DeLillo, Don. Don DeLillo Papers. Harry Ransom Center, University of Texas at Austin.
- Dellamonica, A.M. Alyx Dellamonica & Kelly Robson Collection. Cushing Memorial Library & Archives. Texas A&M University.
- Derleth, August.
- Devenport, Emily. Emily Devenport Collection. Cushing Memorial Library & Archives. Texas A&M University. M M M
- Devoti, Lori. Lori Devoti Papers. SFWA Collection, Rare Books and Special Collections, Northern Illinois University.
- DeWeese, Gene. Gene DeWeese Collection. Special Collections, University of Southern Mississippi.
- Dick, Philip K.
- Collection on Philip K. Dick. Special Collections & University Archives, Tomás Rivera Library, University of California, Riverside.
- Anne R. Dick Collection on Philip K. Dick. Special Collections & University Archives, Tomás Rivera Library, University of California, Riverside.
- Joan Simpson Collection on Philip K. Dick. Special Collections & University Archives, Tomás Rivera Library, University of California, Riverside.
- Manuscript Collection. Merril Collection of Science Fiction, Speculation and Fantasy. Toronto Public Library.
- Philip K. Dick papers. University Archives and Special Collections. California State University, Fullerton.
- Philip K. Dick papers. Manuscript Collections. Huntington Library.
- Dickinson, Peter. Peter Dickinson Archive. "Seven Stories" National Centre for Children's Books. Gateshead, UK
- Dickson, Gordon R.
- Dietz, Tom. Tom Dietz Collection. Ms2528. Hargrett Rare Books & Manuscripts Library, University of Georgia.
- Diomede, John K. See Effinger, George Eric.
- Disch, Thomas M. Thomas M. Disch Papers. YCAL MSS 851. Beinecke Rare Book and Manuscript Library. Yale University.
- Doctorow, Cory. Manuscript Collection. Merril Collection of Science Fiction, Speculation and Fantasy. Toronto Public Library.
- Dollens, Morris Scott. Dollens (Morris Scott) papers. Special Collections & University Archives, Tomás Rivera Library. University of California, Riverside.
- Donaldson, Stephen R. Stephen R. Donaldson Collection. Special Collections and Archives. Kent State University.
- Doyle, Arthur Conan. Sir Arthur Conan Doyle Collection. Harry Ransom Center, University of Texas at Austin.
- Dozier, William. William Dozier Papers. American Heritage Center. University of Wyoming.
- Dozois, Gardner. Dozois (Gardner) papers. Special Collections & University Archives, Tomás Rivera Library. University of California, Riverside.
- DuChamp, L. Timmel. L. Timmel DuChamp Papers. SFWA Collection, Rare Books and Special Collections, Northern Illinois University. Please contact curator for information on unprocessed materials.
- Dunsany, Lord [Edward John Moreton Drax Plunkett].