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.
#1
#2
1971 • 596 Readers • 6h 48m • 4
#3
1972 • 313 Readers • 288 pages • 3.9
#4
#5
#6
#7
1976 • 85 Readers • 256 pages • 3.5
#8
#9
1978 • 92 Readers • 288 pages • 3.3
#10
#11
#12
#1 of 6 in Saga of the Pliocene Exile
1981 • 21 Readers • 433 pages • 3.9
#13
#4 of 9 in Foundation (Publication Order)
#14
#15
#16
1985 • 180 Readers • 296 pages • 3.5
#17
#18
#19
#20
#21
#22
#7 of 16 in Vorkosigan Saga (Publication Order)
1991 • 165 Readers • 402 pages • 4.1
#23
#1 of 4 in Oxford Time Travel
1992 • 504 Readers • 593 pages • 3.8
#24
#25
#8 of 16 in Vorkosigan Saga (Publication Order)
1994 • 104 Readers • 613 pages • 4.1
#26
#27
#28
#29
#2 of 4 in Oxford Time Travel
1990 • 317 Readers • 514 pages • 4.2
#30
1999 • 864 Readers • 1,152 pages • 4.2
#31
#32
2001 • 51 Readers • 608 pages • 3.6
#33
2002 • 164 Readers • 3.6
#34
#35
#36
#3 of 1 in The Baroque Cycle
2001 • 154 Readers • 912 pages • 4.2
#37
1900 • 248 Readers • 415 pages • 3.5
#38
2006 • 146 Readers • 364 pages • 3.4
#39
2006 • 312 Readers • 414 pages • 3.7
#40
2008 • 722 Readers • 1,092 pages • 4.1
#41
#42
#43
#44
#45
2012 • 841 Readers • 318 pages • 3.8
#46
#47
#2 of 5 in Imperial Radch
#48
#49
#3 of 4 in The Three-Body Problem
2010 • 1,050 Readers • 604 pages • 4.4
#50
#1 of 3 in The Interdependency
#51
#1 of 4 in Lady Astronaut Universe
#52
2 The City in the Middle of the Night
2018 • 288 Readers • 366 pages • 3.2
#53
#54
#2 of 2 in Teixcalaan
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#56