Prometheus Award
The Prometheus Award is an award for libertarian science fiction novels given annually by the Libertarian Futurist Society, which also publishes a quarterly journal Prometheus. L. Neil Smith established the award in 1979, but it was not awarded regularly until the newly founded Libertarian Futurist Society revived it in 1982. The Society created a Hall of Fame Award (for classic works of libertarian science fiction, not necessarily novels) in 1983, and also presents occasional one-off awards.
Multiple recipients
Some authors have won the award for best novel more than once:
Cory Doctorow (three times)
George Orwell (twice)
F. Paul Wilson (twice)
James P. Hogan (twice)
Vernor Vinge (twice)
Ken MacLeod (three times)
L. Neil Smith (three times)
Victor Koman (three times)
A few authors have won the Prometheus Hall of Fame award more than once:
Robert Heinlein
Poul Anderson
Ayn Rand
F. Paul Wilson
Process
Anyone may join the Libertarian Futurist Society at various levels: Basic, Full, or Full plus Committee.