* Series
Nidorian (writing as Robert Randall)
1. The Shrouded Planet (1957)
2. The Dawning Light (1959)
Lord Valentine
1. Lord Valentine's Castle (1980)
2. Majipoor Chronicles (1982)
3. Valentine Pontifex (1983)
New Springtime
1. At Winter's End (1988)
2. The Queen of Springtime (1989)
Fire in Winter (with Karen Haber)
1. The Mutant Season (1989)
Lord Prestimion
1. Sorcerers of Majipoor (1996)
2. Lord Prestimion (1999)
3. The King of Dreams (2001)
* Novels
Revolt on Alpha C (1955)
The 13th Immortal (1957)
Master of Life and Death (1957)
Aliens From Space (1958) (writing as David Osborne)
Invaders from Earth (1958)
Invisible Barriers (1958)
Invisible Barriers (1958) (writing as David Osborne)
Lest We Forget Thee, Earth (1958) (writing as Calvin M Knox)
The Silent Invaders (1958)
Starhaven (1958) (writing as Ivar Jorgenson)
Stepsons of Terra (1958)
The Planet Killers (1959)
The Plot Against Earth (1959) (writing as Calvin M Knox)
Starman's Quest (1959)
Planet of Death (1960)
Lost Race of Mars (1960)
Collision Course (1961)
Recalled to Life (1962)
The Seed of Earth (1962)
One of Our Asteroids is Missing (1964) (writing as Calvin M Knox)
Regan's Planet (1964)
Time of the Great Freeze (1964)
Conquerors from the Darkness (1965)
We the Marauders (1965)
The Gate of Worlds (1967)
Thorns (1967)
Those Who Watch (1967)
The Time Hoppers (1967)
To Open the Sky (1967)
Hawksbill Station (1968) = The Anvil of Time
The Masks of Time (1968) = Vornan-19
The Man in the Maze (1969)
Three Survived (1969)
Across a Billion Years (1969)
Nightwings (1969)
To Live Again (1969)
Up the Line (1969)
Tower of Glass (1970)
Downward to the Earth (1970)
World's Fair 1992 (1970)
A Time of Changes (1971)
The World Inside (1971)
Son of Man (1971)
Dying Inside (1972) 
다잉 인사이드
The Book of Skulls (1972) 
두개골의 서
The Second Trip (1972)
The Stochastic Man (1975)
Shadrach in the Furnace (1976)
Shores of Tomorrow (1976)
The Desert of Stolen Dreams (1981)
Lord of Darkness (1983)
Gilgamesh the King (1984)
Sailing to Byzantium (1985)
Tom O'Bedlam (1985)
Star of Gypsies (1986)
Project Pendulum (1987)
The Secret Sharer (1988)
Springtimes End (1988)
To the Land of the Living (1989)
In Another Country (1989)
The New Springtime (1989)
Letters from Atlantis (1990)
The Face of the Waters (1991)
Child of Time (1991) (with Isaac Asimov)
Thebes of the Hundred Gates (1992)
Kingdoms of the Wall (1992)
The Ugly Little Boy (1992) (with Isaac Asimov)
The Positronic Man (1992) (with Isaac Asimov)
Hot Sky at Midnight (1993)
The Mountains of Majipoor (1995)
Starborne (1995)
The Realm of Prester John (1996)
The Alien Years (1998)
Shadow on the Stars (2000)
Cronos (2001)
The Longest Way Home (2002)
Roma Eterna (2003)
* Collections
Next Stop the Stars (1962)
Godling, Go Home (1964)
To Worlds Beyond (1965)
Needle in a Timestack (1966)
Nightfall: And Other Stories (1969) (with Isaac Asimov) 
나이트 폴
The Calibrated Alligator: And Other Science Fiction Stories (1969)
Dimension Thirteen (1969)
The Cube Root of Uncertainty (1970)
Parsecs and Parables (1970)
Moonferns and Starsongs (1971)
The Day the Sun Stood Still: Three Original Novellas of Science Fiction (1972) (with Poul Anderson, Gordon R Dickson)
The Reality Trip: And Other Implausibilities (1972)
Earth's Other Shadow (1973)
Unfamiliar Territory (1973)
Valley Beyond Time (1973)
Born with the Dead (1974)
Sundance: And Other Science Fiction Stories (1974)
The Feast of St. Dionysus: Five Science Fiction Stories (1975)
The Best of Robert Silverberg (1976)
Capricorn Games (1976)
Songs of Summer: And Other Stories (1979)
A Robert Silverberg Omnibus (omnibus) (1981)
World of a Thousand Colors (1982)
Secret Sharers: The Collected Stories of Robert Silverberg, Volume One (1983)
The Conglomeroid Cocktail Party (1983)
Beyond the Safe Zone: Collected Short Fiction of Robert Silverberg (1986)
Edge of Light (omnibus) (1988)
Sailing to Byzantium / Seven American Nights (omnibus) (1989)
The Collected Stories of Robert Silverberg (1992)
Ringing the Changes: The Collected Stories of Robert Silverberg Volume Five (1992)
Pluto in the Morning Light: The Collected Stories of Robert Silverberg Volume 1 (1992)
The Road to Nightfall: The Collected Stories Volume 4 (1996)
Lion Time in Timbuktu: The Collected Stories of Robert Silverberg Volume Six (2000)
In Another Country And Other Short Novels (2002)
Hawksbill Times Two (2002)
Phases of The Moon: Stories of Six Decades (2004)
* Non fiction
The Man Who Found Nineveh: The story of Austen Henry Layard (1964)
Scientists and Scoundrels: A Book of Hoaxes (1965)
Men Who Mastered the Atom (1965)
The Morning of Mankind: Prehistoric Man in Europe (1967)
The Search for El Dorado (1967)
The Golden Dream (1967)
Ghost Towns of the American West (1968)
The South Pole (1968)
Stormy Voyager: The Story of Charles Wilkes (1968)
World of Ocean Depths (1968)
Mound-Builders of Ancient America (1968)
Auk, the Dodo and the Oryx (1969)
Wonders of Ancient Chinese Science (1969)
Bruce of the Blue Nile (1969)
The Challenge of Climate: Man and His Environment (1969)
Vanishing Giants: The Story of the Sequoias (1969)
The World of Space (1969)
Mammoths Mastodons and Man (1970)
The Seven Wonders of the Ancient World (1970)
To the Western Shore: Growth of the United States, 1776-1853 (1971)
Clocks for the Ages: How Scientists Date the Past (1971)
Into Space (1971) (with Arthur C Clarke)
The Pueblo Revolt (1971)
John Muir: Prophet Among the Glaciers (1972)
The Longest Voyage: Circumnavigators in the Age of Discovery (1972)
Galactic Dreamers: Science Fiction As Visionary Literature (1977)
Treasures Beneath the Sea (1986)
Reflections and Refractions: Thoughts on Science-fiction and Science (1997)
* Short stories
The Silent Colony (1954)
Absolutely Inflexible (1956)
Double Dare (1956)
The Great Kladnar Race (1956) (with Randall Garrett)
Hopper (1956)
Slaves of the Star Giants (1956)
The Songs of Summer (1956)
To be continued (1956)
The Artefact Business (1957)
Blaze of Glory (1957)
En Route to Earth (1957)
Eve and the Twenty - Four Adams (1957)
Hidden Talent (1957)
The Man Who Never Forgot (1957)
One - Way Journey (1957)
The Overlord's Thumb (1957)
Precedent (1957)
Prime Commandment (1957)
The Shrines of Earth (1957)
Solitary (1957)
Sunrise on Mercury (1957)
Warm Man (1957)
World of a Thousand Colors (1957)
The Four (1958)
Alaree (1958)
Back from the Grave (1958)
Birds of a Feather (1958)
Hunt the Space-Witch! (1958)
The Iron Chancellor (1958)
Journey's End (1958)
Passport to Sirius (1958)
Road to Nightfall (1958)
There Was an Old Woman (1958)
Counterpart (1959)
Demons of Cthulhu (1959)
His Brother's Weeper (1959)
Mugwump Four (1959)
The Outbreeders (1959)
Translation Error (1959)
Dark Companion (1960)
The Pain Peddlers (1963)
The Shadow of Wings (1963)
To See the Invisible Man (1963)
The Desiccator (1964)
Force of Mortality (1964)
Godling, Go Home! (1964)
The Lonely One (1964)
The Man With Talent (1964)
Neighbor (1964)
There's No Place Like Space (1964)
Why? (1964)
The World We Left Behind (1964)
The Sixth Palace (1965)
By the Seawall (1966)
Halfway House (1966)
A Man of Talent (1966)
Bride 91 (1967)
Flies (1967)
Hawksbill Station (1967) Nebula (nominee)
The King of the Golden River (1967)
As Is (1968)
Fangs of the Trees (1968)
Going Down Smooth (1968)
Nightwings (1968) Nebula (nominee)
Passengers (1968) Nebula
To the Dark Star (1968)
After the Myths Went Home (1969)
How It Was When the Past Went Away (1969)
Sundance (1969)
To Jorslem (1969) Nebula (nominee)
Black is Beautiful (1970)
Ishmael in Love (1970)
The Pleasure of Their Company (1970)
The Reality Trip (1970)
Ringing the Changes (1970)
The Song the Zombie Sang (1970) (with Harlan Ellison)
We Know Who We Are (1970)
The World Outside (1970) Hugo (nominee)
Caliban (1971)
Going (1971)
Good News from the Vatican (1971) Nebula
In Entropy's Jaws (1971)
Something Wild Is Loose (1971)
Caught in the Organ Draft (1972)
Now+n Now-n (1972)
Push No More (1972)
Thomas the Proclaimer (1972)
What We Learned from This Morning's Newspaper (1972)
When We Went to See the End of the World (1972) Hugo (nominee)
Breckenridge and the Continuum (1973)
The Feast of St. Dionysus (1973)
Getting Across (1973)
In the Group (1973)
Many Mansions (1973)
MS Found in an Abandoned Time Machine (1973)
The Mutant Season (1973)
The Science Fiction Hall of Fame (1973)
Ship-Sister, Star-Sister (1973)
Some Notes on the Pre-dynastic Epoch (1973)
This Is the Road (1973)
The Wind and the Rain (1973)
Born with the Dead (1974) Nebula
Capricorn Games (1974)
The Day the Founder Died (1974)
The Dybbuk of Mazel Tov IV (1974)
In the House of Double Minds (1974)
Schwartz Between the Galaxies (1974) Hugo (nominee)
A Sea of Faces (1974)
Trips (1974)
Our Lady of the Sauropods (1980) Hugo (nominee)
The Desert of Stolen Dreams (1981)
How They Pass the Time in Pelpel (1981)
The Palace at Midnight (1981)
The Regulars (1981)
The Soul Painter and the Shape Shifter (1981)
A Thousand Paces Along the Via Dolorosa (1981)
Waiting for the Earthquake (1981)
Among the Dream - Speakers (1982)
At the Conglomeroid Cocktail Party (1982)
Calantine Explains (1982)
The Changeling (1982)
Crime and Punishment (1982)
The Far Side of the Bell-Shaped Curve (1982)
Gianni (1982) 
지아니
In the Fifth Year of the Voyage (1982)
Jennifer's Lover (1982)
The Man Who Floated in Time (1982)
Not Our Brother (1982)
The Pope of the Chimps (1982) Nebula (nominee) 침팬지의 교황 
Thesme and the Ghayrog (1982)
A Thief in Ni - moya (1982)
The Time of the Burning (1982)
The Trouble With Sempoanga (1982)
Voriax and Valentine (1982)
Amanda and the Alien (1983)
Basileus (1983)
Dancers in the Time-Flux (1983)
Gate of Horn, Gate of Ivory (1983)
Homefaring (1983) Nebula (nominee)
Multiples (1983)
Needle in a Timestack (1983)
The Affair (1984)
Snake and Ocean, Ocean and Snake (1984)
Tourist Trade (1984)
Sailing to Byzantium (1985) Nebula
Sunrise on Pluto (1985)
Symbiont (1985)
Against Babylon (1986)
Blindsight (1986)
Gilgamesh in the Outback (1986) Nebula (nominee)
Watchdogs (1986)
Hardware (1987)
The Iron Star (1987)
The Pardoner's Tale (1987)
The Secret Sharer (1987) Nebula (nominee)
The Dead Man's Eyes (1988)
Hannibal's Elephants (1988)
House of Bones (1988)
The Asenion Solution (1989)
Batman in Nighttown (1989) (with Karen Haber)
Chip Runner (1989)
Enter a Soldier. Later: Enter Another (1989) Nebula (nominee)
A Sleep and a Forgetting (1989)
To the Promised Land (1989)
Lion Time in Timbuctoo (1990)
The Perfect Host (1992)
Hot Times in Magma City (1995)
The Red Blaze is the Morning (1995)
Crossing Into the Empire (1996)
Death Do Us Part (1996)
Diana of the Hundred Breasts (1996)
The Martian Invasion Journals of Henry James (1996)
Beauty in the Night (1997)
The Colonel in Autumn (1998)
The Seventh Shrine (1998)
A Hero of the Empire (1999)
A Killing Light (1999) (with Karen Haber)
A Happy Day in 2381
It Comes and Goes