2010  Blackout/All Clear - Connie Willis (announced May 23, 2011)
 
2009  The Windup Girl - Paolo Bacigalupi
2008  Powers - Ursula K. Le Guin
2007  The Yiddish Policemen's Union - Michael Chabon
2006  Seeker - Jack McDevitt
2005  Camouflage - Joe Haldeman
2004  Paladin of Souls - Lois McMaster Bujold
2003  The Speed of Dark - Elizabeth Moon
2002  American Gods - Neil Gaiman
2001  The Quantum Rose - Catherine Asaro
2000  Darwin's Radio - Greg Bear

1999  Parable of the Talents - Octavia E. Butler
1998  Forever Peace - Joe Haldeman
1997  The Moon and the Sun - Vonda N. Mcintyre
1996  Slow River - Nicola Griffith
1995  The Terminal Experiment - Robert J. Sawyer
1994  Moving Mars - Greg Bear
1993  Red Mars - Kim Stanley Robinson
1992  Doomsday Book - Connie Willis
1991  Stations of the Tide - Michael Swanwick
1990  Tehanu - Ursula K. Le Guin

1989  The Healer's War - Elizabeth Ann Scarborough
1988  Falling Free - Lois Mcmaster Bujold
1987  The Falling Woman - Pat Murphy
1986  Speaker for the Dead - Orson Scott Card
1985  Ender's Game - Orson Scott Card
1984  Neuromancer - William Gibson
1983  Startide Rising - David Brin
1982  No Enemy But Time - Michael Bishop
1981  Claw of the Conciliator: New Sun 2 - Gene Wolfe
1980  Timescape - Gregory Benford

1979  The Fountains of Paradise - Arthur Charles Clarke
1978  Dreamsnake - Vonda N. Mcintyre
1977  Gateway - Frederik Pohl
1976  Man Plus - Frederik Pohl
1975  The Forever War - Joe Haldeman
1974  The Dispossessed: An Ambiguous Utopia - Ursula Le Guin
1973  Rendezvous With Rama - Arthur Charles Clarke
1972  The Gods Themselves - Isaac Asimov
1971  Time of Changes - Robert Silverberg
1970  Ringworld - Larry Niven

1969  The Left Hand of Darkness - Ursula K. Le Guin
1968  Rite of Passage - Alexei Panshin
1967  The Einstein Intersection - Samuel R. Delany
1966  Flowers for Algernon by Daniel Keyes & Babel-17: Including Empire Star - Samuel R. Delany
1965  Dune - Frank Herbert