Science fiction

Fantasy

Adams, Douglas
        --The Hitchhiker's Guide to the Galaxy (this title is also a BBC movie)
        --Mostly Harmless
        --So Long, and Thanks for all the Fish

Anderson, Kevin J.
        --Darkest Knight
        --The Emperor's Plague
        --Hopscotch
        --Jedi Under Siege

Anthony, Piers
        --Alien Plot
        --Total Recall (this title was inspired by a Philip K. Dick story and movie)

Asimov, Isaac
        --Gold
        --I, Robot (this title is also a movie)
        --Prelude to Foundation
        --Second Foundation
        --The Ugly Little Boy

Bester, Alfred
        --Psychoshop
        --The Stars of my Destination

Butler, Octavia E.
        --Adulthood Rites
        --Clay's Ark
        --Parable of the Sower
        --Parable of the Talents
        --Xenogenesis

Card, Orson Scott
        --The Call of Earth
        --Ender's Game
        --Lost Boys
        --Shadow of the Hegemon

Cherryh, C.J.
        --Cloud's Rider
        --Foreigner
        --Forge of Heaven
        --Tripoint

Dickson, Gordon R.
        --The Dorsai Companion
        --The Right to Arm Bears
        --Soldier, Ask Not

Drake, David
        --Cross the Stars
        --The Far Side of the Stars
        --The Voyage

Farmer, Philip Jose
        --Dayworld
        --Dayworld Rebel
        --The Magic Labyrinth

Finney, Jack
        --Invasion of the Body Snatchers (this title is also a movie)

Heinlein, Robert A.
        --Double Star
        --For Us, The Living
        --Starship Troopers (this title is also a movie)
        --Stranger in a Strange Land

Herbert, Frank
        --Chapterhouse, Dune
        --Dune (this title is also a movie)
        --Dune Messiah

Hogan, James P.
        --The Anguished Dawn
        --Cradle of Saturn
        --Inherit the Stars
        --Voyage From Yesteryear

Le Guin, Ursula K.
        --The Birthday of the World
        --The Telling

Mackay, Scott
        --Omnifix
        --Orbis
        --Outpost

MacLeod, Ken
        --The Cassini Division
        --The Sky Road
        --The Star Fraction
        --The Stone Canal

McCaffrey, Anne
        --Crystal Line
        --Damia
        --Pegasus in Space
        --Power Play
        --The Tower and the Hive

Moon, Elizabeth
        --Against the Odds
        --Hunting Party
        --Once a Hero
        --Winning Colors

Niven, Larry
        --The Burning City
        --Destiny's Road
        --The Legacy of Heorot
        --Playgrounds of the Mind

Pohl, Frederik
        --The Age of Pussyfoot
        --The Far Shore of Time
        --The Other End of Time
        --The Voices of Heaven

Reynolds, Alastair
        --Absolution Gap
        --Chasm City
        --Diamond Dogs
        --Redemption Ark
        --Revelation Space

Sheffield, Charles
        --Aftermath
        --The Ganymede Club
        --Godspeed
        --Putting Up Roots

Silverberg, Robert
        --The Alien Years
        --Letters from Atlantis
        --Lord Prestimion
        --Project Pendulum

Simmons, Dan
        --Endymion
        --Hyperion
        --Ilium

Stackpole, Michael
        --The Krytos Trap
        --Rogue Squadron
        --Ruin
        --Wedge's Gamble

Weber, David
        --Echoes of Honor
        --The Excalibur Alternative
        --March to the Stars
        --March Upcountry
        --War of Honor

Wells, H. G.
        --The Island of Dr. Moreau (this title is also a 1996 and 1932 movie)
        --The Time Machine (this title is also a 1960 and 2002 movie)

Verne, Jules
        --20,000 Leagues Under the Sea (this title is also a movie)
        --From the Earth to the Moon (this title is also a movie)
        --Journey to the Center of the Earth (this title is also a 1959 and 1999 movie)

Zahn, Timothy
        --Angelmass
        --The Green and the Gray
        --Specter of the Past
        --Star Wars: Survivor's Quest