Writings:"CONAN" FANTASY NOVELS
- Conan the Conqueror, Gnome Press (New York, NY), 1950, published as The Hour of the Dragon, Putnam (New York, NY), 1977.
"CONAN" SHORT-STORY COLLECTIONS- The Sword of Conan, Gnome Press (New York, NY), 1952.
- The Coming of Conan, Gnome Press (New York, NY), 1953, new edition illustrated by Mark Schultz, Del Rey (New York, NY), 2005.
- King Conan, Gnome Press (New York, NY), 1953.
- Conan the Barbarian, Gnome Press (New York, NY), 1954.
- (With L. Sprague de Camp) Tales of Conan, Gnome Press (New York, NY), 1955.
- (With de Camp) Conan the Adventurer, Lancer (New York, NY), 1966.
- (With de Camp and Lin Carter) Conan, Lancer (New York, NY), 1967.
- (With de Camp) Conan the Warrior, Lancer (New York, NY), 1967.
- (With de Camp) Conan the Usurper, Lancer (New York, NY), 1967.
- (With de Camp) Conan the Freebooter, Lancer (New York, NY), 1968.
- (With de Camp and Carter) Conan the Wanderer, Lancer (New York, NY), 1968.
- (With others) Conan the Avenger, Lancer (New York, NY), 1968.
- (With de Camp and Carter) Conan of Cimmeria, Lancer (New York, NY), 1969.
- Conan: The Tower of the Elephant, Grosset & Dunlap (New York, NY), 1975.
- Conan: The People of the Black Circle, edited by Karl Edward Wagner, Berkley (New York, NY), 1977.
- Jewels of Gwahlur, illustrated by Dean Morrissey, Donald M. Grant (West Kingston, RI), 1979.
- Black Colossus, illustrated by Ned Dameron, Donald M. Grant (West Kingston, RI), 1979.
- The Conan Chronicles, 1989.
- The Bloody Crown of Conan (includes The People of the Black Circle, The Hour of the Dragon, and A Witch Shall Be Born), illustrated by Gary Gianni, Del Rey (New York, NY), 2004.
- The Complete Chronicles of Conan, Gollancz (London, England), 2004.
- The Conquering Sword of Conan, Del Rey/Ballantine Books (New York, NY), 2005.
Contributor of Conan stories to periodicals, including Weird Tales.
WESTERN SHORT STORIES
- A Gent from Bear Creek, Jenkins (Grove City, PA), 1937, selections published as The Pride of Bear Creek, Donald M. Grant (West Kingston, RI), 1966.
- The Vultures; Showdown at Hell's Canyon, Fictioneer, 1973.
- Vultures of Whapeton, Zebra (New York, NY), 1975.
- The Last Ride, Berkley (New York, NY), 1978.
- Mayhem on Bear Creek, illustrated by Tim Kirk, Donald M. Grant (West Kingston, RI), 1979.
- The Riot at Bucksnort and other Western Tales, edited and with an introduction by David Gentzel, University of Nebraska Press (Lincoln, NE), 2005.
- The End of the Trail: Western Stories, edited and with an introduction by Rusty Burke, University of Nebraska Press (Lincoln, NE), 2005.
Contributor of western stories to periodicals, including Argosy, Cowboy Stories, and Zane Grey Western.
OTHER NOVELS
- Almuric, Ace (New York, NY), 1964.
- A Witch Shall Be Born, illustrations by Alicia Austin, Donald M. Grant (West Kingston, RI), 1975.
OTHER SHORT-STORY COLLECTIONS- Skull-Face and Others, Arkham House (Sauk City, WI), 1946, published as Skull-Face Omnibus, Spearman (Sutton, Nebraska), 1976, published in England as The Valley of Worms and Others, 1976, and as The Shadow Kingdom, 1976.
- The Dark Man and Others, Arkham House (Sauk City, WI), 1963.
- (With Lin Carter) King Kull, Lancer (New York, NY), 1967, material by Howard published separately as Kull, the Fabulous Warrior King, 1978.
- Wolfshead, Lancer (New York, NY), 1968.
- Red Shadows, Donald M. Grant (West Kingston, RI), 1968.
- (With Tevis Clyde Smith) Red Blades of Black Cathay, illustrations by David Karbonik, Donald M. Grant (West Kingston, RI), 1971.
- Marchers of Valhalla, illustrations by Robert Bruce Acheson, Donald M. Grant (West Kingston, RI), 1972.
- The Sowers of the Thunder, illustrations by Roy G. Krenkel, Donald M. Grant (West Kingston, RI), 1973.
- The Incredible Adventures of Dennis Dorgan, introduction by Darrell C. Richardson, Fax (West Linn, OR), 1974.
- The Lost Valley of Iskander, illustrations by Michael William Kaluta, Fax (West Linn, OR), 1974.
- The People of the Black Circle, Donald M. Grant (West Kingston, RI), 1974.
- Tigers of the Sea, Donald M. Grant (West Kingston, RI), 1974.
- Worms of the Earth (includes Bran Mak Morn), Donald M. Grant (West Kingston, RI), 1974.
- Red Nails, illustrations by George Barr, Donald M. Grant (West Kingston, RI), 1975.
- Swords of Shahrazar, illustrations by Michael William Kaluta, Fax (West Linn, OR), 1976.
- Black Vulmea's Vengeance, and Other Tales of Pirates, illustrations by Robert James Pailthorpe, Grant (West Kingston, RI), 1976.
- The Devil in Iron, illustrations by Dan Green, Grosset & Dunlop (New York, NY), 1976.
- Rogues in the House, Donald M. Grant (West Kingston, RI), 1976.
- Son of the White Wolf, illustrations by Marcus Boas, Fax (West Linn, OR), 1977.
- The People of the Black Circle, Berkley (New York, NY), 1977.
- Queen of the Black Coast, Donald M. Grant (West Kingston, RI), 1978.
- The Gods of Bal-Sagoth, 1979.
- Hawks of Outremer, edited by Richard L. Tierney, illustrations by Rob MacIntyre and Chris Pappas, Donald M. Grant (West Kingston, RI), 1979.
- The Road to Azrael, illustrations by Roy G. Krenkel, Donald M. Grant (West Kingston, RI), 1979.
- Lord of the Dead, illustrations by G. Duncan Eagleson, Donald M. Grant (West Kingston, RI), 1981.
- The Last Cat Book, illustrations by Peter Kuper, Dodd, Mead (New York, NY), 1984.
- The Dark Barbarian: The Writings of Robert E. Howard, edited by Don Herron, Greenwood Press (Westport, CT), 1984.
- Pool of the Black One, Donald M. Grant (West Kingston, RI), 1986.
- Cthulhu: The Mythos and Kindred Horrors, 1987.
- Shadows of Dreams, edited by David A. Drake, 1989.
- Bran Mak Morn: The Last King, illustrated by Gary Gianni, Wandering Star (London, England), 2001, Del Rey/Ballantine Books (New York, NY), 2005.
- The Complete Action Stories, edited by and with an introduction by Paul Herman, Wildside Press (Holicong, PA), 2001.
- Waterfront Fists and Others, introduction by Mark Finn, edited by Paul Herman, Wildside Press (Holicong, PA), 2003.
- The Savage Tales of Solomon Kane, illustrated by Gary Gianni, Del Rey/Ballantine Books (New York, NY), 2004.
- Gates of the Empire and Other Tales of the Crusades, Wildside Press (Holicong, PA), 2004.
- Lord of Samarcand and Other Adventure Tales of the Old Orient, edited by Rusty Burke, introduction by Patrice Louinet, University of Nebraska Press (Lincoln, NE), 2005.
- The Black Stranger and Other American Tales, edited and with an introduction by Steven Tompkins, University of Nebraska Press (Lincoln, NE), 2005.
- Boxing Stories, edited and with an introduction by Chris Gruber, University of Nebraska Press (Lincoln, NE), 2005.
Other omnibus volumes include The Book of Robert E. Howard, 1976; The Second Book of Robert E. Howard, 1976; The Robert E. Howard Omnibus, 1977; Sword Woman, 1977; and Black Canaan, 1978.
POETRY
- Always Comes Evening: The Collected Poems of Robert E. Howard, Arkham House (Sauk City, WI), 1958.
- Etchings in Ivory, Glenn Lord, 1968.
- Singers in the Shadows, illustrations by Marcus Boas, Donald M. Grant (West Kingston, RI), 1970.
- Echoes from an Iron Harp, illustrations by Alicia Austin, Donald M. Grant (West Kingston, RI), 1972.
- A Song of the Naked Lands, Squires, 1973.
- The Gold and the Grey, Squires, 1974.
LETTERS- Selected Letters, Nineteen Twenty Three to Nineteen Thirty, Necronomicon Press (West Warwick, RI), 1989.
- Selected Letters, 1931-1936, Necronomicon Press (West Warwick, RI), 1991.
- Dear August: Letters, Robert E. Howard to August Derleth, 1932-1936, Robert E. Howard Properties, 2002.
- Dear HPL: Letters, Robert E. Howard to H.P. Lovecraft, 1930-1936, Robert E. Howard Properties, 2002.