2022: A Desolation Called Peace, by Arkady Martine
2021: Network Effect by Martha Wells
2020: A Memory Called Empire by Arkady Martine
2019: The Calculating Stars by Mary Robinette Kowal
2018: The Stone Sky by N.K. Jemisin
​2017: The Obelisk Gate by N.K. Jemisin
2016: The Fifth Season by N.K. Jemisin
2015: The Three Body Problem by Cixin Liu, translated by Ken Liu
2014: Ancillary Justice by Ann Leckie
2013: Redshirts: A Novel with Three Codas by John Scalzi
2012: Among Others by Jo Walton
2011: Blackout/All Clear by Connie Willis
2010: The City & The City by China Miéville
         The Windup Girl by Paolo Bacigalupi
2009: The Graveyard Book by Neil Gaiman
2008: The Yiddish Policemen’s Union by Michael Chabon
2007: Rainbows End by Vernor Vinge
2006: Spin by Robert Charles Wilson
2005: Jonathan Strange & Mr. Norrell by Susanna Clarke
2004: Paladin of Souls by Lois McMaster Bujold
2003: Hominids by Robert J. Sawyer
2002: American Gods by Neil Gaiman
2001: Harry Potter and the Goblet of Fire by J. K. Rowling
2000: A Deepness in the Sky by Vernor Vinge
1999: To Say Nothing of the Dog by Connie Willis
1998: Forever Peace by Joe Haldeman
1997: Blue Mars by Kim Stanley Robinson
1996: The Diamond Age by Neal Stephenson
1995: Mirror Dance by Lois McMaster Bujold
1994: Green Mars by Kim Stanley Robinson
1993: A Fire Upon the Deep by Vernor Vinge
         Doomsday Book by Connie Willis
1992: Barrayar by Lois McMaster Bujold
1991: The Vor Game by Lois McMaster Bujold
1990: Hyperion by Dan Simmons
1989: Cyteen by C. J. Cherryh
1988: The Uplift War by David Brin
1987: Speaker for the Dead by Orson Scott Card
1986: Ender’s Game by Orson Scott Card
1985: Neuromancer by William Gibson
1984: Startide Rising by David Brin
1983: Foundation’s Edge by Isaac Asimov
1982: Downbelow Station by C. J. Cherryh
1981: The Snow Queen by Joan D. Vinge
1980: The Fountains of Paradise by Arthur C. Clarke
1979: Dreamsnake by Vonda N. McIntyre
1978: Gateway by Frederik Pohl
1977: Where Late the Sweet Birds Sang by Kate Wilhelm
1976: The Forever War by Joe Haldeman
1975: The Dispossessed by Ursula K. Le Guin
1974: Rendezvous With Rama by Arthur C. Clarke
1973: The Gods Themselves by Isaac Asimov
1972: To Your Scattered Bodies Go by Philip José Farmer
1971: Ringworld by Larry Niven
1970: The Left Hand of Darkness by Ursula K. Le Guin
1969: Stand on Zanzibar by John Brunner
1968: Lord of Light by Roger Zelazny
1967: The Moon is a Harsh Mistress by Robert A. Heinlein
1966: Dune by Frank Herbert
1965: The Wanderer by Fritz Leiber
1964: Here Gather the Stars (alt: Way Station) by Clifford D. Simak
1963: The Man in the High Castle by Philip K. Dick
1962: Stranger in a Strange Land by Robert A. Heinlein
1961: A Canticle for Leibowitz by Walter M. Miller, Jr.
1960: Starship Troopers (alt: Starship Soldier) by Robert A. Heinlein
1959: A Case of Conscience by James Blish
1958: The Big Time by Fritz Leiber
1957: No novel award
1956: Double Star by Robert A. Heinlein
1955: They’d Rather Be Right by Mark Clifton and Frank Riley
1954: Fahrenheit 451 (alt: The Fireman) by Ray Bradbury(retro)
1953: The Demolished Man by Alfred Bester
1951: Farmer in the Sky by Robert A. Heinlein (retro)
1946: The Mule by Isaac Asimov (retro)

For additional awards, please check out the Hugo Awards website.

2019: The Calculating Stars by Mary Robinette Kowal
2018: The Stone Sky by N.K. Jemisin
​2017: The Obelisk Gate by N.K. Jemisin
2016: The Fifth Season by N.K. Jemisin

2014: Ancillary Justice by Ann Leckie
2013: Redshirts: A Novel with Three Codas by John Scalzi
2012: Among Others by Jo Walton
2011: Blackout/All Clear by Connie Willis

2007: Rainbows End by Vernor Vinge
2006: Spin by Robert Charles Wilson
2005: Jonathan Strange & Mr. Norrell by Susanna Clarke
2004: Paladin of Souls by Lois McMaster Bujold
2003: Hominids by Robert J. Sawyer

2000: A Deepness in the Sky by Vernor Vinge

1998: Forever Peace by Joe Haldeman
1997: Blue Mars by Kim Stanley Robinson

1994: Green Mars by Kim Stanley Robinson
1993: A Fire Upon the Deep by Vernor Vinge

1992: Barrayar by Lois McMaster Bujold
1991: The Vor Game by Lois McMaster Bujold
1990: Hyperion by Dan Simmons
1989: Cyteen by C. J. Cherryh
1988: The Uplift War by David Brin
1987: Speaker for the Dead by Orson Scott Card

1985: Neuromancer by William Gibson
1984: Startide Rising by David Brin
1983: Foundation’s Edge by Isaac Asimov
1982: Downbelow Station by C. J. Cherryh
1981: The Snow Queen by Joan D. Vinge
1980: The Fountains of Paradise by Arthur C. Clarke

1978: Gateway by Frederik Pohl
1977: Where Late the Sweet Birds Sang by Kate Wilhelm
1976: The Forever War by Joe Haldeman
1975: The Dispossessed by Ursula K. Le Guin
1974: Rendezvous With Rama by Arthur C. Clarke
1973: The Gods Themselves by Isaac Asimov
1972: To Your Scattered Bodies Go by Philip José Farmer
1971: Ringworld by Larry Niven
1970: The Left Hand of Darkness by Ursula K. Le Guin
1969: Stand on Zanzibar by John Brunner

1968: Lord of Light by Roger Zelazny

1965: The Wanderer by Fritz Leiber
1964: Here Gather the Stars (alt: Way Station) by Clifford D. Simak
1963: The Man in the High Castle by Philip K. Dick

1961: A Canticle for Leibowitz by Walter M. Miller, Jr.

1960: Starship Troopers (alt: Starship Soldier) by Robert A. Heinlein
1959: A Case of Conscience by James Blish
1958: The Big Time by Fritz Leiber
1957: No novel award
1956: Double Star by Robert A. Heinlein
1955: They’d Rather Be Right by Mark Clifton and Frank Riley

1951: Farmer in the Sky by Robert A. Heinlein (retro)
1946: The Mule by Isaac Asimov (retro)