2016	The Fifth Season (Broken Earth #1)	Jemisin, N. K.	
2015	The Three-Body Problem (The Three-Body Trilogy, Book 1)	Liu, Cixin	
2014	Ancillary Justice	Leckie, Ann	
2013	Redshirts: A Novel With Three Codas	Scalzi, John	
2012	Among Others	Walton, Jo	
2011	All Clear	Willis, Connie	
2011	Blackout	Willis, Connie	
2010	The City & The City	Miéville, China	
2010	The Windup Girl	Bacigalupi, Paolo	
2009	The Graveyard Book	Gaiman, Neil Mckean, Dave	
2008	The Yiddish Policemen's Union	Chabon, Michael	
2007	Rainbows End	Vinge, Vernor	
2006	Spin	Wilson, Robert Charles	
2005	Jonathan Strange and Mr. Norrell	Clarke, Susanna	
2004	Paladin of Souls (Curse of Chalion #2)	Bujold, Lois Mcmaster	
2003	Hominids (Neanderthal Parallax #1)	Sawyer, Robert J.	
2002	American Gods: The Tenth Anniversary Edition	Gaiman, Neil	
2001	Harry Potter and the Goblet of Fire (Harry Potter #4)	Rowling, J. K.	
2000	A Deepness in the Sky (Zones of Thought #2)	Vinge, Vernor	
1999	To Say Nothing of the Dog; or, How We Found the Bishop's Bird Stump at Last	Willis, Connie	
1998	Forever Peace	Haldeman, Joe	
1997	Blue Mars (Mars #3)	Robinson, Kim Stanley	
1996	The Diamond Age	Stephenson, Neal	
1995	Mirror Dance (Miles Vorkosigan #8)	Bujold, Lois Mcmaster	
1994	Green Mars (Mars #2)	Robinson, Kim Stanley	
1993	A Fire Upon the Deep (Zones of Thought #1)	Vinge, Vernor	
1993	The Doomsday Book	Willis, Connie	
1992	Barrayar (Cordelia Naismith #2)	Bujold, Lois Mcmaster	
1991	The Vor Game (Miles Vorkosigan #2)	Bujold, Lois Mcmaster	
1990	Hyperion (Hyperion #1)	Simmons, Dan	
1989	Cyteen: The Betrayal (Cyteen Part 1)	Cherryh, C. J.	
1988	The Uplift War (Uplift #3)	Brin, David	
1987	Speaker for the Dead (Ender Wiggin #2)	Card, Orson Scott	
1986	Ender's World (Ender Wiggin #1)	Stone, Eric James Johnston, Aaron Ian, Janis Kowal, Mary Robinette Shusterman, Neal Card, Orson Scott	
1985	Neuromancer	Gibson, William	
1984	Startide Rising (Uplift #2)	Brin, David	
1983	Foundation's Edge (Foundation Series #6)	Asimov, Isaac	
1982	Downbelow Station (Company Wars #1)	Cherryh, C. J.	
1981	The Snow Queen	Vinge, Joan D.	
1980	The Fountains of Paradise	Clarke, Arthur C.	
1979	Dreamsnake	Mcintyre, Vonda N.	
1978	Gateway (Heechee Saga #1)	Pohl, Frederik	
1977	Where Late the Sweet Birds Sang	Wilhelm, Kate	
1976	The Forever War	Scalzi, John Haldeman, Joe	
1975	The Dispossessed: An Ambiguous Utopia (Hainish #5)	Ursula K. Le Guin	
1974	Rendezvous with Rama	Clarke, Arthur C.	
1973	The Gods Themselves	Asimov, Isaac	
1972	To Your Scattered Bodies Go (Riverworld #1)	Farmer, Philip Jose	
1971	Ringworld (Ringworld #1)	Niven, Larry	
1970	The Left Hand of Darkness (Hainish #4)	Ursula K. Le Guin
1969	Stand on Zanzibar	Brunner, John	
1968	Lord of Light	Zelazny, Roger	
1967	The Moon Is a Harsh Mistress	Heinlein, Robert A.	
1966	This Immortal	Zelazny, Roger	
1966	Dune (Dune Chronicles, Book 1)	Herbert, Frank	
1965	The Wanderer	Leiber, Fritz	
1964	Way Station	Simak, Clifford D.	
1963	The Man in the High Castle	Dick, Philip K.	
1962	Stranger in a Strange Land	Heinlein, Robert A.	
1961	A Canticle for Leibowitz	Miller Jr., Walter M.	
1960	Starship Troopers	Heinlein, Robert A.	
1959	A Case of Conscience	Blish, James	
1958	The Big Time	Leiber, Fritz	
1956	Double Star	Heinlein, Robert A.	
1955	The Forever Machine	Clifton, Mark Riley, Frank