
Across the Sea of Suns is a 1984 hard science fiction novel by American writer Gregory Benford. It is the second novel in his Galactic Center Saga, and continues to follow the scientist Nigel Walmsley, who encountered an extraterrestrial machine in the previous book, In the Ocean of Night, aboard an expeditionary spacecraft, searching for life. Eventually Nigel discovers evidence of the major conflict in the galaxy.

Armor is a military science fiction novel by John Steakley. It has some superficial similarities with Robert A. Heinlein's Starship Troopers but concentrates more on the psychological effects of violence on human beings rather than on the political aspect of the military, which was the focus of Heinlein's novel.

The Big U (1984) is a novel by American writer Neal Stephenson. His first published novel, it is a satire of campus life.

Brother in the Land is a 1984 post-apocalyptic novel by the British author Robert E. "Bob" Swindells. The plot follows the adventures of a teenage boy as he struggles to survive in the north of England after a nuclear war has devastated the country.

Carnosaur (1984) is a horror novel written by Australian author John Brosnan, under the pseudonym of Harry Adam Knight. A film adaptation was made in 1993 by Adam Simon.

Clay's Ark (1984) is a novel by American science fiction author Octavia E. Butler. The last published of her Patternist series, the novel serves as a prequel that accounts for the arrival of the Clay Ark disease that leads to the evolution of clayarks, the mutants that threaten human survival in the other books in the series.

Demon is a science fiction novel by American writer John Varley, published in 1984. The third and final book in his Gaea Trilogy, it was nominated to the Locus Award.

Devil On My Back is a teenage science fiction dystopian novel by Canadian author Monica Hughes. It was first published in 1984. Devil on My Back is the first book of the ArcOne Series and its sequel is The Dream Catcher.

Dinosaur Planet Survivors or Survivors: Dinosaur Planet II is a 1984 science fiction novel by American writer Anne McCaffrey. It is the sequel to Dinosaur Planet (1978) and thus the second book in the Ireta series.

Dr. Adder is a dark science fiction novel by American writer K. W. Jeter, set in a future where the United States has largely broken down into reluctantly cooperating enclaves run by a wide variety of strongmen and warlords, with a veneer of government control that seems largely interested in controlling technology. Dr. Adder is an artist-surgeon, who modifies sexual organs of his patients to satisfy the weirdest of perversion; he is clearly depicted as a partly criminal, partly counter-cultural figure in a future Los Angeles which anticipates the cyberpunk idea of the Sprawl trilogy.

Doomsday Plus Twelve is a 1984 post-apocalyptic novel by James D. Forman.

Down to a Sunless Sea is a science fantasy novel by American writer Lin Carter, the fourth in his Edgar Rice Burroughs- and Leigh Brackett-inspired series The Mysteries of Mars. It was first published in paperback by DAW Books in June 1984 and reissued in hardcover and trade paperback by Wildside Press in February 2008.

Emergence is a science fiction novel by American writer David R. Palmer. It first appeared as a novella published in Analog Science Fiction in 1981; the same magazine also published Part II, "Seeking", in 1983. The completed novel then was published by Bantam in 1984. The plot follows a precocious 11-year-old orphan girl, living in a post-apocalyptic United States. It had three printings through July 1985, and was republished in 1990 as a "Signature Special Edition" with a few minor edits and a new afterword by the author.

The Final Encyclopedia is a science fiction book by Gordon R. Dickson published in 1984. It is part of the Childe Cycle series. The Final Encyclopedia transitions from the militaristic action-adventure of the earlier books in the Childe Cycle to a philosophical commentary on the evolution of humankind. The Final Encyclopedia is analogous to the Theatre of Memory from Renaissance times.

Free Live Free is a novel by American writer Gene Wolfe, first published in 1984.

Heechee Rendezvous is a science fiction novel by the American writer Frederik Pohl, published in 1984 by the Del Rey imprint of Ballantine Books. It is a sequel to Gateway (1977) and Beyond the Blue Event Horizon (1981) and is set about three decades after Gateway. It has been cataloged as the third book in a six-book series called Heechee or The Heechee Saga but Kirkus reviewed it as completing a trilogy and a German-language edition of the three books was published as the Gateway trilogy after all six were out.

Heretics of Dune is a 1984 science fiction novel by Frank Herbert, the fifth in his Dune series of six novels. It was ranked as the No. 13 hardcover fiction best seller of 1984 by The New York Times.

The Integral Trees is a 1984 science fiction novel by American writer Larry Niven. Like much of Niven's work, the story is heavily influenced by the setting: a gas torus, a ring of air around a neutron star. A sequel, The Smoke Ring, was published in 1987.

Interstellar Pig, published in 1984 by Bantam Books, is a science fiction novel for young adults written by William Sleator. It was listed as an ALA Notable Book, a SLJ Best Book of the Year, and a Junior Literary Guild Selection.

Job: A Comedy of Justice is a novel by Robert A. Heinlein published in 1984. The title is a reference to the biblical Book of Job and James Branch Cabell's book Jurgen, A Comedy of Justice. It won the Locus Award for Best Fantasy Novel in 1985 and was nominated for the Nebula Award for Best Novel in 1984, and the Hugo Award for Best Novel in 1985.

The Laughter of Carthage is the second novel in the Pyat Quartet tetralogy of novels by Michael Moorcock. It was first published in 1984 by Secker & Warburg. It was written in tandem, one during the day, and one at night, with the second novel in the Von Bek series, The City in the Autumn Stars.

Master of Space and Time is a 1984 science fiction novel by American writer Rudy Rucker that centers on an inventor, Harry Gerber, who discovers a way to create his own tailor-made universe.

Mercenary is a novel by Piers Anthony published in 1984.

The Merchants' War is a 1984 satirical science fiction novel by American writer Frederik Pohl. Set in a near future commercial dystopian interplanetary society, the novel was a sequel to The Space Merchants, and was originally co-published with it as Venus, Inc. Pohl's collaborator in the first novel, C.M. Kornbluth, died in 1958, and so did not contribute to this sequel.

Moon-Flash is a science fiction novel for juvenile readers by Patricia A. McKillip. It was first published in hardcover by Atheneum in August 1984, with a paperback edition issued by Berkley Books in October 1985. It was subsequently combined with its sequel The Moon and the Face in an omnibus edition, also titled Moon-Flash, issued in paperback and ebook by Firebird/Penguin in March 2005.

Native Tongue is a feminist science fiction novel by American writer Suzette Haden Elgin, the first book in her series of the same name. The trilogy is centered in a future dystopian American society where the 19th Amendment was repealed in 1991 and women have been stripped of civil rights. A group of women, part of a worldwide group of linguists who facilitate human communication with alien races, create a new language for women as an act of resistance. Elgin created that language, Láadan, and instructional materials are available.

Neuromancer is a 1984 science fiction novel by American-Canadian writer William Gibson. It is one of the best-known works in the cyberpunk genre and the first novel to win the Nebula Award, the Philip K. Dick Award, and the Hugo Award. It was Gibson's debut novel and the beginning of the Sprawl trilogy. Set in the future, the novel follows Henry Case, a washed-up computer hacker who is hired for one last job, which brings him up against a powerful artificial intelligence.

Paradyzja is a 1984 science fiction novel by Polish writer Janusz A. Zajdel.

The Peace War is a science fiction novel by American writer Vernor Vinge, about authoritarianism and technological progress. It was first published as a serial in Analog in 1984, and then appeared in book form shortly afterward. It was nominated for the Hugo Award for Best Novel in 1985. Its sequels are "The Ungoverned", which was a novella published in his collection True Names and Other Dangers, and the novel Marooned in Realtime. The Peace War and Marooned in Realtime were collected in Across Realtime.

The Practice Effect is a novel by David Brin, written in 1984.

Rocheworld is a science fiction novel by Robert Forward which depicts a realistic interstellar mission using a laser driven light sail propulsion system to send the spaceship and a crew of 20 on a journey of 5.9 light-years to the double planet that orbits Barnard's Star, which they call Rocheworld, where they make startling discoveries stranger than anything ever encountered before.

Them Bones (1984) is the first solo novel by science fiction writer Howard Waldrop. It was nominated for the Philip K. Dick Award in 1984, but lost out to William Gibson's Neuromancer; both novels were part of the third Ace Science Fiction Specials series edited by Terry Carr.

Vampire Hunter D: Raiser of Gales is a Japanese novel by Hideyuki Kikuchi. It was first published in Japan in 1984, was published in English in 2005.

Voyage to the City of the Dead (1984) is a science fiction novel by American writer Alan Dean Foster.

West of Eden is a 1984 science fiction novel by American writer Harry Harrison.

The Wolf Worlds is the second book of The Sten Adventures by Chris Bunch and Allan Cole.