
The Adventure of the Peerless Peer is a 1974 adventure pastiche novel written by Philip Jose Farmer, writing as Dr. John H. Watson, about the meeting of Sherlock Holmes and Tarzan. This was one of several works Farmer wrote that involved Tarzan.

A Barnstormer in Oz: A Rationalization and Extrapolation of the Split-Level Continuum is a 1982 novel by Philip José Farmer and is based on the setting and characters of L. Frank Baum's The Wonderful Wizard of Oz.

The Dark Design (1977) is a science fiction novel by American writer Philip José Farmer, the third in the series of Riverworld books. The title is derived from lines in Sir Richard Francis Burton's poem The Kasîdah of Hâjî Abdû El-Yezdî:And still the Weaver plies his loom, whose warp and woof is wretched Man Weaving th' unpattern'd dark design, so dark we doubt it owns a plan.

The Dark Heart of Time: A Tarzan novel is a novel by American writer Philip José Farmer, authorized by Edgar Rice Burroughs, Inc. Published in 1999, the book was first announced under the title Tarzan's Greatest Secret in 1997. A 2018 reissue of the novel marked the book's first hardcover edition, and was retitled Tarzan and the Dark Heart of Time.

Dark Is The Sun is a science fiction novel by American writer Philip José Farmer, first published in 1979. It tells the story of the people and creatures left on Earth when the Sun is dead and the universe is heading towards the Big Crunch.

Dayworld is a science fiction novel by American writer Philip José Farmer. Published in 1985, it is the first in the Dayworld tetralogy of novels inspired by Farmer's own 1971 short story "The Sliced-Crosswise Only-On-Tuesday World". There are two sequels - Dayworld Rebel (1987) and Dayworld Breakup (1990) - and one prequel, Dayworld: A Hole in Wednesday, co-authored by Danny Adams (2016).

Dayworld Rebel is a 1987 science fiction novel by American writer Philip José Farmer, the second book in the Dayworld Trilogy.

Doc Savage: His Apocalyptic Life is a fictional biography by Philip José Farmer about pulp fiction hero Doc Savage.

The Fabulous Riverboat is a science fiction novel by American writer Philip José Farmer, the second book in the Riverworld series.

A Feast Unknown is a novel written by American author Philip José Farmer. The novel is a pastiche of pulp fiction, erotica, and horror fiction. It was originally published in 1969, and was followed by two sequels, Lord of the Trees and The Mad Goblin.

Fire and the Night is an American novel by Philip José Farmer. It was published in 1962 by Regency Books, as a paperback costing 50 cents. Unusual for Farmer, the novel contains no science fictional or otherwise fantastic themes. It was his first "mainstream" book, but did not attract much attention from critics or readers alike. It has been recently reprinted by Subterranean Press in the collection The Other in the Mirror.

Flesh is an American science fiction novel written by Philip José Farmer. Originally released in 1960, it was Farmer's second novel-length publication, after The Green Odyssey. Flesh features many sexual themes, as is typical of Farmer's earliest work.

Flight to Opar is a fantasy novel by American writer Philip José Farmer, first published in paperback by DAW Books in June 1976, and reprinted twice through 1983. The first British edition was published by Magnum in 1977; it was reprinted by Methuen in 1983. It was later gathered together with a preceding novel, Hadon of Ancient Opar, and a sequel, The Song of Kwasin, into the omnibus collection Gods of Opar: Tales of Lost Khokarsa (2012). The work has also been translated into French. It and the other books in the series purport to fill in some of the ancient prehistory of the lost city of Opar, created by Edgar Rice Burroughs as a setting for his Tarzan series.

The Gate of Time is an alternate history novel by American writer Philip José Farmer. It was first published in paperback editions by Belmont Books in the United States in October 1966 and by Quartet in the United Kingdom in September 1974. Later it was revised and expanded as Two Hawks from Earth, in which form it was first published, also in paperback by Ace Books, in May 1979. This edition was reprinted by Berkley Books in July 1985. A trade paperback edition was published by MonkeyBrain Books with a new afterword by Christopher Paul Carey in May 2009.

Gods of Riverworld (1983) is a science fiction novel by American writer Philip José Farmer, the fifth and last in the series of Riverworld books. It was reprinted in 1998 by Del Rey under the title The Gods of Riverworld.

Greatheart Silver is a 1982 science fiction novel written by Philip José Farmer. It is a collection of three of Farmer's stories from the series Weird Heroes published in the 1970s with the title character, a lineal descendant of Thomas Jefferson and Sally Hemings, working for the Acme Zeppelin Corporation as a blimp pilot and private detective.

The Green Odyssey is an American science fiction novel written by Philip José Farmer. It was Farmer's first book-length publication, originally released by Ballantine in 1957. Unlike Farmer's most prolific earlier short story work, this book contains no sexual themes, though his next book Flesh returned to these motifs. The novel also appeared in the back ground of the first episode of The Twilight Zone.

Hadon of Ancient Opar is a fantasy novel by American writer Philip José Farmer, first published in paperback by DAW Books in April 1974, and reprinted three times through 1983. The first British edition was published by Magnum in 1977; it was reprinted by Methuen in 1993. The first trade paperback edition was published by Titan Books in 2013. The work has also been translated into French. It was later gathered together with its sequels Flight to Opar and The Song of Kwasin into the omnibus collection Gods of Opar: Tales of Lost Khokarsa (2012). It and its sequels purport to fill in some of the ancient prehistory of the lost city of Opar, created by Edgar Rice Burroughs as a setting for his Tarzan series.

Image of the Beast (1968) is a horror erotic novel by American writer Philip José Farmer.

Inside / Outside is a science fiction novel by American writer Philip José Farmer. Originally released in 1964, the novel explores the question of what happens before souls inhabit human bodies, and how they are created.

Jesus on Mars is a 1979 science fiction novel by American writer Philip José Farmer, set on Mars and involving an alien civilization. It makes social commentary on a just society and on religious belief.

Lord of the Trees is an American novel by Philip José Farmer. Originally released in 1970, it was one of two intertwining sequels to Farmer's previous A Feast Unknown, along with The Mad Goblin. Lord of the Trees features Lord Grandrith, an analogue of Tarzan, as the main character.

The Mad Goblin is an American novel by Philip José Farmer. Originally released in 1970, it was one of two intertwining sequels to Farmer's previous A Feast Unknown, along with Lord of the Trees. The Mad Goblin features Doc Caliban, an analogue of Doc Savage, as the main character.

The Magic Labyrinth (1980) is a science fiction novel by American writer Philip José Farmer, the fourth in the series of Riverworld books. The title is derived from lines in Sir Richard Francis Burton's poem The Kasîdah of Hâjî Abdû El-Yezdî:Reason is Life's sole arbiter, the magic Laby'rinth's single clue:Worlds lie above, beyond its ken; what crosses it can ne'er be true.

The Maker of Universes (1965) is a science fiction novel by American author Philip José Farmer. It is the first in his World of Tiers series.

Night of Light is a science fiction novel by American writer Philip José Farmer. A shorter version was published in June 1957 in The Magazine of Fantasy & Science Fiction. The expanded version was first published in 1966 by Berkley Medallion with copyright reserved to the author. It has been recently reprinted by Subterranean Press in the collection The Other in the Mirror. It has been cited as an influence on the Jimi Hendrix psychedelic rock song "Purple Haze" (1967).

The Other Log of Phileas Fogg is a science fiction/steampunk parallel novel written by American author Philip José Farmer in 1973. It was originally published by DAW Books and later reprinted in 1979 by Hamlyn and again in 1982 by Tor Books. Tor has subsequently reissued the novel in 1988 and 1993.

Red Orc's Rage (1991) is a recursive science fiction novel by American writer Philip José Farmer, part of his "World of Tiers" series. The plot of the book was inspired by the work of American psychiatrist A. James Giannini, M.D, who used earlier books in Farmer's series as role-playing tools and aids to self-analysis. This technique was developed at Yale University and further expanded by Dr. Giannini at Ohio State University. The technique is properly called "projective psychotherapy". It involves immersing the patients in a fictional world which is accessible to the psychiatrist. It is subject to alternative interpretation but not to change. By utilizing a structured fantasy world the subconscious can be directly accessed without confronting resistances of the conscious mind.

River of Eternity is a science fiction novel by American writer Philip José Farmer, an early version of what became his Riverworld series.

Tarzan Alive: A Definitive Biography of Lord Greystoke is a fictional biography by American author Philip José Farmer, that alleges the life of Edgar Rice Burroughs' character Tarzan, is a story of a real person. The book was first published in hardcover by Doubleday in 1972, with a paperback edition following from Popular Library in 1973 and a trade paperback edition from Bison Books in 2006. The first British edition was published by Panther in 1974.

To Your Scattered Bodies Go (1971) is a science fiction novel by American writer Philip José Farmer, the first book in the Riverworld series. It won a Hugo Award for Best Novel in 1972 at the 30th Worldcon. The title is derived from the 7th of the "Holy Sonnets" by English poet John Donne:At the round earth's imagin'd corners, blowYour trumpets, angels, and arise, ariseFrom death, you numberless infinitiesOf souls, and to your scattered bodies go.

Tongues of the Moon is a science fiction novel by American writer Philip José Farmer. Originally released in 1964, the book is an action story, focusing on fighting and combat scenes rather than a complex plot. It was initially printed as a novella in Amazing Stories.

Traitor to the Living (1973) is a science fiction novel by American writer Philip José Farmer. The story follows Herald Childe, a private detective, who is also the lead character in two earlier Farmer novels published as pornography by Essex House. In this non-erotic novel, the lead character is clearly Herald Childe, but it follows the events of a never-written third book which left Childe amnesiac.

Up from the Bottomless Pit and Other Stories (ISBN 978-1-59606-128-6) is an original collection featuring a novel and other short literary works by American science fiction author Philip José Farmer, edited by Christopher Paul Carey, published in 2007. All of the works in the book written by Farmer previously appeared in the periodical Farmerphile: The Magazine of Philip José Farmer between the years 2005 and 2007. The collection includes several mainstream stories by Farmer, who is better known for his science fiction work.

Venus on the Half-Shell is a science fiction novel by American writer Philip José Farmer, writing pseudonymously as "Kilgore Trout," a fictional recurring character in many of the novels of Kurt Vonnegut. This book first appeared as a lengthy fictitious "excerpt"—attributed to Trout —in Vonnegut's God Bless You, Mr. Rosewater (1965). With Vonnegut's permission, Farmer expanded the fragment into an entire standalone novel. Farmer's story was first published in two parts beginning in the December 1974 issue of The Magazine of Fantasy and Science Fiction. The plot, in which Earth is destroyed by cosmic bureaucrats doing routine maintenance and the sole human survivor goes on a quest to find the "Definitive Answer to the Ultimate Question," was an inspiration for the plot of the later Hitchhiker's Guide to the Galaxy series.