As himself

• The Intelligence Gigantic (1933 Amazing Stories; 1943)
• Liners of Time (1935 Amazing Stories; 1947) and its sequel
• "Zagribud" (1937 Amazing Stories; cut variant title Science Metropolis as by Vargo Statten 1952)
• Nebula X (1946 as "The Multillionth Chance"; revised 1950)
• The Sun Makers (1937 as "Metamorphosis"; revised 1950)
• The Avenging Martian (1938 as "Red Heritage"; revised 1950)
• The Renegade Star (1938 as "The Blue Infinity"; revised 1951)
• The Inner Cosmos (1937 as "Worlds Within"; revised 1952)
• To the Ultimate (1936 as "Mathematica"; revised 1952)
• The Dust Destroyer (1934 as "The Man who Stopped the Dust"; revised 1953)
• The Gold of Akada (1951)
• Anjani the Mighty (1951)
• The Creature from the Black Lagoon (1954 as by Vargo Statten) novelization of 1954 film
• Slaves of Ijax (1947 chap)
• From Afar (1982 chap)
• No Grave Need I (1984 chap)
• The Slitherers (1984 chap)

Golden Amazon

1. The Golden Amazon (1939-43 Fantastic Adventures as by Thornton Ayre; 1944)
2. The Golden Amazon Returns (1945; 1949 variant title The Deathless Amazon 1953 Canada)
3. The Golden Amazon's Triumph (1946; 1953)
4. The Amazon's Diamond Quest (1947 as "Diamond Quest"; 1953)
5. Twin of the Amazon (1948; 1954)
6. The Amazon Strikes Again (1948; 1954)
7. Conquest of the Amazon (1949; 1973 chap)
8. Lord of Atlantis (1949; 1991)
9. Triangle of Power (1950)
10. Amethyst City (1951)
11. Daughter of Golden Amazon
12. Quorne Returns
13. The Central Intelligence (1953)
14. The Cosmic Crusaders (1955)
15. Parasite Planet (1955)
16. World Out of Step (1956)
17. The Shadow People (1957)
18. Kingpin Planet (1957)
19. World in Reverse (1958)
20. Dwellers in Darkness (1958)

Mars Quartet

• Emperor of Mars (1950)
• Warrior of Mars (1950)
• Red Men of Mars (1950)
• Goddess of Mars (1950)

Works written under pseudonyms

• What Happened to Hammond? (1951) as by Hugo Blayn
• Valley of Pretenders (circa 1942 chap US) as by Dennis Clive
• The Voice Commands (circa 1942 chap US) as by Dennis Clive
• Other Eyes Watching (1946) as by Polton Cross
• The Trembling World (1949) as by Astron Del Martia. There is another novel One Against Time as by Astron Del Martia stated to have been written by JRF. This is incorrect. It was in fact written by Steven Francis.
• Don't Touch Me (1953) as by Spike Gordon
• The Dyno-Depressent (1953) as by Volsted Gridban
• Magnetic Brain (1953) as by Volsted Gridban
• Moons for Sale (1953) as by Volsted Gridban
• Scourge of the Atom (1953 as "After the Atom" by JRF; revised 1953) as by Volsted Gridban
• A Thing of the Past (1953) as by Volsted Gridban
• The Genoial Dinosaur (1954)
• Exit Life (1941 as "The World in Wilderness" as by Thornton Ayre; revised 1953) as by Volsted Gridban
• The Master Must Die (1953) as by Volsted Gridban
• The Lonely Astonomer (partly based on "Death at the Observatory" as by JRF; 1954) as by Volsted Gridban
• The Purple Wizard (1953) as by Volsted Gridban
• The Frozen Limit (1954) as by Volsted Gridban
• I Came - I Saw - I Wondered (1954) as by Volsted Gridban
• Liquid Death (1954) as by "Griff"
• Cosmic Exodus (1953 chap) as by Conrad G. Holt
• Dark Boundaries (1953) as by Paul Lorraine
• The Hell-Fruit (1953 chap) as by Laurence F. Rose
• Account Settled (1949) as by John Russell
• Z-Formations (1953) as by Brian Shaw

Work written under the name Vargo Statten

• Operation Venus (1950)
• Annihilation (1950)
• The Micro-Men (1950)
• Wanderer of Space (1950)
• 2000 Years On (1950)
• Inferno! (1950)
• The Cosmic Flame (1950)
• Cataclysm (1944 as "The Devouring Tide" as by Polton Cross; revised 1951)
• The Red Insects (1951)
• The New Satellite (1951)
• Deadline to Pluto (1951)
• The Petrified Planet (1951)
• Born of Luna (1951)
• The Devouring Fire (1951)
• The Catalyst (1951)
• The Space Warp (1952)
• The Eclipse Express (1952)
• The Time Bridge (1942 as "Prisoner of Time" by Polton Cross; revised 1952)
• The Man from Tomorrow (1950 as "Stranger in our Midst" by JRF; revised 1952)
• The G-Bomb (1941 as "The Last Secret Weapon" by Polton Cross; revised 1952)
• Laughter in Space (1939 as "Laughter out of Space" by Dennis Clive; revised 1952)
• Across the Ages (1952 as "Glimpse" by JRF; 1952 chap)
• The Last Martian (1952 chap)
• Worlds to Conquer (1952 chap)
• De-Creation (1952 chap)
• The Time Trap (1952 chap)
• Ultra Spectrum (1953)
• Black-Wing of Mars (1953 as "Winged Pestilence" by JRF; 1953)
• Man in Duplicate (1953)
• Zero Hour (1952 as "Deadline" by JRF; 1953)
• The Black Avengers (1953)
• Odyssey of Nine (1953)
• Pioneer 1990 (1940 as "He Conquered Venus" by JRF; revised 1953)
• The Interloper (1953)
• Man of Two Worlds (1953)
• The Lie Destroyer (1953)
• Black Bargain (1953)
• The Grand Illusion (1953)
• Wealth of the Void (1954)
• A Time Appointed (1954)
• I Spy (1954)
• The Multi-Man (1954)
• 1,000 Year Voyage (1954)
• Earth 2 (1955)

• The Multi-Man (1968 chap) by Philip Harbottle