The Locus Award for Best Science Fiction Novel is an annual award presented by Locus, a science fiction and fantasy magazine. The award for Sci-Fi novels was first presented in 1980. However previous to that, from 1971 they award a more generic "Best Novel" award, which coincidentally was only awarded to sci-fi books, so I have also included those books here.
 Ringworld
| 3.67 | 279 reads |
 The Lathe of Heaven
| 4.06 | 215 reads |
 The Gods Themselves
| 3.91 | 105 reads |
 Rendezvous with Rama
| 3.93 | 393 reads |
 The Dispossessed
| 4.16 | 316 reads |
 The Forever War
| 3.96 | 391 reads |
 Where Late The Sweet Birds Sang
| 3.29 | 24 reads |
 Gateway
| 3.87 | 136 reads |
 Dreamsnake
| 3.43 | 21 reads |
 Titan
| 3.67 | 18 reads |
 The Snow Queen
| 3.44 | 49 reads |
 The Many-Colored Land
| 4.25 | 4 reads |
 Foundation's edge
| 3.94 | 221 reads |
 Startide Rising
| 3.99 | 57 reads |
 The Integral Trees
| 3.85 | 16 reads |
 The Postman
| 3.5 | 64 reads |
 Speaker for the Dead
| 4.11 | 517 reads |
 The Uplift War
| 3.89 | 47 reads |
 Cyteen
| 3.39 | 28 reads |
 Hyperion
| 4.27 | 688 reads |
 The Fall of Hyperion
| 4.17 | 344 reads |
 Barrayar
| 3.99 | 97 reads |
 Doomsday Book
| 3.79 | 185 reads |
 Green Mars
| 3.76 | 112 reads |
 Mirror Dance
| 4.06 | 53 reads |
 The Diamond Age: or, A Young Lady's Illustrated Primer
| 3.99 | 205 reads |
 Blue Mars
| 3.85 | 69 reads |
 The Rise of Endymion
| 4.1 | 150 reads |
 To Say Nothing of the Dog
| 4.14 | 103 reads |
 Cryptonomicon
| 4.27 | 302 reads |
 The Telling
| 3.69 | 15 reads |
 Passage
| 3.64 | 18 reads |
 The Years of Rice and Salt
| 3.52 | 43 reads |
 Ilium
| 3.86 | 89 reads |
 The Confusion
| 4.27 | 62 reads |
 The System of the World
| 4.34 | 65 reads |
 Accelerando
| 3.62 | 68 reads |
 Rainbows End
| 3.44 | 49 reads |
 The Yiddish Policemen's Union
| 3.6 | 109 reads |
 Anathem
| 4.21 | 229 reads |
 Boneshaker
| 3.33 | 117 reads |
 Blackout
| 3.62 | 51 reads |
 All Clear
| 4.03 | 40 reads |
 Embassytown
| 3.81 | 105 reads |
 Redshirts
| 3.86 | 434 reads |
 Abaddon's Gate
| 4.19 | 583 reads |
 Ancillary Sword
| 4 | 247 reads |
 Ancillary Mercy
| 4.15 | 187 reads |
 Death's End
| 4.38 | 468 reads |
 The Collapsing Empire
| 4.09 | 296 reads |
 The Calculating Stars
| 4.06 | 234 reads |
 The City in the Middle of the Night
| 3.21 | 70 reads |
 Network Effect
| 4.39 | 589 reads |
 A Desolation Called Peace
| 4.18 | 217 reads |
 The Kaiju Preservation Society
| 3.92 | 377 reads |
 System Collapse
| 4.16 | 328 reads |