| | 2009 |
| WINNER (tie): | Song of Time, Ian R. MacLeod
|
| WINNER (tie): | Little Brother, Cory Doctorow
|
| | 2008 |
| WINNER: | In War Times, Kathleen Ann Goonan
|
| | 2007 |
| WINNER: | Titan, Ben Bova
|
| | 2006 |
| WINNER: | Mindscan, Robert J. Sawyer
|
| | 2005 |
| WINNER: | Market Forces, Richard Morgan
|
| | 2004 |
| WINNER: | Omega, Jack McDevitt
|
| | 2003 |
| WINNER: | Probability Space, Nancy Kress
|
| | 2002 |
| WINNER (tie): | The Chronoliths, Robert Charles Wilson
|
| WINNER (tie): | Terraforming Earth, Jack Williamson
|
| | 2001 |
| WINNER: | Genesis, Poul Anderson
|
| | 2000 |
| WINNER: | A Deepness in the Sky, Vernor Vinge
|
| | 1999 |
| WINNER: | Brute Orbits, George Zebrowski
|
| | 1998 |
| WINNER: | Forever Peace, Joe Haldeman
|
| | 1997 |
| WINNER: | Fairyland, Paul J. McAuley
|
| | 1996 |
| WINNER: | The Time Ships, Stephen Baxter
|
| | 1995 |
| WINNER: | Permutation City, Greg Egan
|
| | 1994 |
| WINNER: | no award
|
| | 1993 |
| WINNER: | Brother to Dragons, Charles Sheffield
|
| | 1992 |
| WINNER: | Buddy Holly Is Alive and Well on Ganymede, Bradley Denton
|
| | 1991 |
| WINNER: | Pacific Edge, Kim Stanley Robinson
|
| | 1990 |
| WINNER: | The Child Garden, Geoff Ryman
|
| | 1989 |
| WINNER: | Islands in the Net, Bruce Sterling
|
| | 1988 |
| WINNER: | Lincoln's Dreams, Connie Willis
|
| | 1987 |
| WINNER: | A Door Into Ocean, Joan Slonczewski
|
| | 1986 |
| WINNER: | The Postman, David Brin
|
| | 1985 |
| WINNER: | The Years of the City, Frederik Pohl
|
| | 1984 |
| WINNER: | The Citadel of the Autarch, Gene Wolfe
|
| | 1983 |
| WINNER: | Helliconia Spring, Brian W. Aldiss
|
| | 1982 |
| WINNER: | Riddley Walker, Russell Hoban
|
| | 1981 |
| WINNER: | Timescape, Gregory Benford
|
| | 1980 |
| WINNER: | On Wings of Song, Thomas M. Disch
|
| | 1979 |
| WINNER: | Gloriana, Michael Moorcock
|
| | 1978 |
| WINNER: | Gateway, Frederik Pohl
|
| | 1977 |
| WINNER: | The Alteration, Kingsley Amis
|
| | 1976 |
| WINNER: | no award
|
| RETROSPECTIVE PRIZE: | The Year of the Quiet Sun, Wilson Tucker
|
| | 1975 |
| WINNER: | Flow My Tears, the Policeman Said, Philip K. Dick
|
| | 1974 |
| WINNER: | Rendezvous with Rama, Arthur C. Clarke
|
| WINNER: | Malevil, Robert Merle
|
| NONFICTION BOOK: | The Cosmic Connection, Carl Sagan
|
| | 1973 |
| WINNER: | Beyond Apollo, Barry N. Malzberg
|
| SPECIAL AWARD FOR EXCELLENCE IN WRITING: | Dying Inside, Robert Silverberg
|