Novels
* Under the Black Ensign (1935)
* Buckskin Brigades (1937), ISBN 0-88404-280-4
* Slaves of Sleep (1939)
* Ultimate Adventure, the (1939)
* Final Blackout (1940), ISBN 0-88404-340-1
* Indigestible Triton, the (1940)
* The Automagic Horse (1940) published (1994)
* Death's Deputy (1948)
* Return to Tomorrow (1950)
* The Masters of Sleep (1948)
* The Kingslayer (1949)
* Fear (1951), ISBN 0-88404-599-4
* Typewriter in the Sky (1951), ISBN 0-88404-933-7
* Return to Tomorrow (1954)
* The Ultimate Adventure (1970)
* Ole Doc Methuselah (1953), ISBN 0-88404-653-2
* Seven Steps to the Arbiter (1975)
* Battlefield Earth (1982), ISBN 0-312-06978-2
* Mission Earth 1. The Invaders Plan (1985)
* Mission Earth 2. Black Genesis (1986)
* Mission Earth 3. The Enemy Within (1986)
* Mission Earth 4. An Alien Affair (1986)
* Mission Earth 5. Fortune of Fear (1986)
* Mission Earth 6. Death Quest (1986)
* Mission Earth 7. Voyage of Vengeance (1987)
* Mission Earth 8. Disaster (1987)
* Mission Earth 9. Villainy Victorious (1987)
* Mission Earth 10. The Doomed Planet (1987)
* Ai! Pedrito! When Intelligence Goes Wrong (1998)
* Very Strange Trip, a (1999)
Short fiction
* The Dangerous Dimension Astounding Science Fiction, July 1938,
* The Tramp (Part 1), Astounding Science Fiction, September 1938,
* The Tramp (Part 2), Astounding Science Fiction, October 1938,
* The Tramp (Part 3), Astounding Science Fiction, November 1938
* General Swamp, C.I.C. (Part 1), Astounding Science Fiction, Aug 1939 (as Frederick Engelhardt)
* General Swamp, C.I.C. (Part 2), Astounding Science Fiction, Sep 1939 (as Frederick Engelhardt)
* This Ship Kills! Astounding Science Fiction, November 1939 (as Frederick Engelhardt)
* Danger in the Dark Unknown, May 1939
* The Ghoul Unknown, August 1939
* Vanderdecken Unknown, December 1939 (as Frederick Engelhardt)
* The Professor Was a Thief, Astounding Science Fiction, February 1940
* Final Blackout (Part 1), Astounding Science Fiction, April 1940,
* Final Blackout (Part 2), Astounding Science Fiction, May 1940,
* Final Blackout (Part 3), Astounding Science Fiction, June 1940,
* The Kraken Unknown Fantasy Fiction, June 1940 (as Frederick Engelhardt)
* Fear Unknown Fantasy Fiction, July 1940
* The Idealist Astounding Science Fiction, July 1940 (as Kurt von Rachen)
* The Kilkenny Cats Astounding Science Fiction, September 1940 (as Kurt von Rachen)
* The Devil's Rescue Unknown Fantasy Fiction, October 1940,
* One Was Stubborn Unknown Fantasy Fiction, October 1940, (as Rene La Fayette)
* Typewriter in the Sky (Part 1), Unknown Fantasy Fiction, November 1940
* Typewriter in the Sky (Part 2), Unknown Fantasy Fiction, December 1940
* The Traitor Astounding Science Fiction, January 1941 (as Kurt von Rachen)
* History Class, 2133 A.D. Thrilling Wonder Stories, January 1941 (as Frederick Engelhardt)
* The Crossroads Unknown Fantasy Fiction, February 1941, (1941)
* The Mutineers Astounding Science Fiction, April 1941, (as Kurt von Rachen)
* The Case of the Friendly Corpse Unknown Fantasy Fiction, August 1941,
* Borrowed Glory, Unknown Worlds, October 1941, (1941)
* The Last Drop, Astonishing Stories, November 1941, (with L. Sprague de Camp)
* The Invaders,Astounding Science Fiction, January 1942,
* The Rebels Astounding Science Fiction, February 1942, (as Kurt von Rachen)
* He Didn't Like Cats Unknown Worlds, February 1942
* The Room, Unknown Worlds, April 1942,
* Strain, Astounding Science Fiction, April 1942,
* The Slaver, Astounding Science Fiction, June 1942,
* Space Can, Astounding Science Fiction, July 1942
* The Beast, Astounding Science Fiction, October 1942
* The Great Secret, Science Fiction Stories, April 1943,
* The End Is Not Yet (Part 1), Astounding Science Fiction, August 1947
* The End Is Not Yet (Part 2), Astounding Science Fiction, September1947
* The End Is Not Yet (Part 3), Astounding Science Fiction, October 1947
* Ole Doc Methuselah, Astounding Science Fiction, October 1947 (as René Lafayette)
* The Expensive Slaves Astounding Science Fiction, November 1947 (as René Lafayette)
* Her Majesty's Aberration, Astounding Science Fiction, March 1948 (as René Lafayette)
* The Obsolete Weapon, Astounding Science Fiction, May 1948
* The Great Air Monopoly Astounding Science Fiction, September 1948, (as René Lafayette)
* When Shadows Fall, Startling Stories, July 1948,
* 240,000 Miles Straight Up, Thrilling Wonder Stories, December 1948
* Forbidden Voyage, Startling Stories, January 1949, (as René Lafayette)
* The Magnificent Failure, Startling Stories, March 1949, (as René Lafayette)
* Plague! , Astounding Science Fiction, April 1949, (as René Lafayette)
* The Conroy Diary, Astounding Science Fiction, May 1949, (as René Lafayette)
* The Incredible Destination, Startling Stories, May 1949, (as René Lafayette)
* A Sound Investment, Astounding Science Fiction, June 1949, (as René Lafayette)
* The Unwilling Hero, Startling Stories, July 1949, (as René Lafayette)
* A Matter of Matter, Astounding Science Fiction, August 1949,
* Beyond the Black Nebula, Startling Stories, September 1949, (as Rene LaFayete)
* The Automagic Horse, Astounding Science Fiction, October 1949
* The Planet Makers, Thrilling Wonder Stories, October 1949,
* The Emperor of the Universe, Startling Stories, November 1949, (as René Lafayette)
* A Can of Vacuum, Astounding Science Fiction, December 1949
* The Last Admiral, Startling Stories, January 1950, (as René Lafayette)
* Beyond All Weapons, Super Science Stories, January 1950
* Ole Mother Methuselah, Astounding Science Fiction, January 1950, (as René Lafayette)
* Greed, Astounding Science Fiction, April 1950,
* Battling Bolto, Thrilling Wonder Stories, August 1950,
* The Final Enemy Super Science Stories, September 1950,
* Tough Old Man Startling Stories, November 1950,