| User | Country | Gender | Favourite Authors | Points |
| J Fray |  |  | Arthur C Clarke, Isaac Asimov | 0 |
| Jacob | | | Christopher Paolini | 4 |
| jade3 | |  | Rachel Roberts(duh), Flavia Bujor, Phillip Pullman | 4 |
| jademist11 | | | Erin Hunter | 2 |
| Jaguarfang |  | | Erin Hunter (Too many to name) | 91 |
| Jamin_neB | | | Eddings, Brooks, Tolkien, Card, Williams, etc etc | 0 |
| Janay | | | erin hunter | 0 |
| janebtrox | | | J.K. Rowling, Suzanne Collins, Lemony Snicket | 0 |
| Janelle | | | Bujold, Jordan, Pierce, Herbert, Sagan | 4 |
| Janice Grove | | | Janice Grove | 5 |
| Jaypaw33 | | | Kathryn Lasky, Erin Hunter, JK Rowling | 2 |
| Jazstar | | | Erin Hunter | 69 |
| jedimasterrobby | | | Jude Watson, Timothy Zahn, J. R. R. Tolkien | 1812 |
| jelliusbeanus | | | Banks, Reynolds, Brin, Powers | 0 |
| Jetstream | | | Erin Hunter, J.K Rowling, CLAMP | 1 |
| jfarand | | | Harry Turtledove | 71 |
| Jillie Brierley |  | | Isobelle Carmody, John Marsdon, J.K rowling. | 0 |
| Jinx |  | | Robin Hobb, George R R Martin, Melanie Rawn | 3 |
| JLichtenberg | | | Marion Zimmer Bradley, Katherine Kurtz | 0 |
| JohnCenaLover | | | Avi | 0 |
| Johndell | | | Erin Hunter, & CS Lewis | 45 |
| JohnMac | | | Davis Weber | 0 |
| johnmc | | | Gemmell, King,Scalzi,Cornwell, | 0 |
| johnpcater | | | Michael Crichton, Steven King, Greg Iles | 7 |
| johnreizer02 | | | James Patterson | 10 |
| jose |  | | Arthur Conan Doyles, Agatha Cristie, Chris Carter | 0 |
| joycewusango |  | | Lynne Ewing | 2 |
| jrspiers | | | Tom Deitz, Terry Pratchett, Susan Cooper | 0 |
| juw1957 |  | | Terry Pratchett, Erikson | 0 |