* Series
Nidorian (writing as Robert Randall)
1. The Shrouded Planet (1957)
2. The Dawning Light (1959)
Psi-Power (writing as Mark Phillips)
1. That Sweet Little Old Lady (1959) = Brain Twister
2. The Impossibles (1963)
3. Supermind (1963)
Lord Darcy
Too Many Magicians (1966) 
마술사가 너무 많다
Murder and Magic (1979) 
셰르부르의 저주
The Napoli Express (1979) 
나폴리 특급 살인
Lord Darcy Investigates (1981)
Lord Darcy (omnibus) (2002)
Gandalara (with Vicki Ann Heydron)
1. The Steel of Raithskar (1981)
2. The Glass of Dyskornis (1982)
3. The Bronze of Eddarta (1983)
4. The Well of Darkness (1983)
5. The Search for Ka (1984)
6. Return to Eddarta (1984)
The Gandalara Cycle I (omnibus) (1986)
7. The River Wall (1986)
* Novels
Pagan Passions (1959) (with Larry M Harris)
Earth Invader (1962)
Unwise Child (1962) = Starship Death
Anything You Can Do... (1969)
* Collections
Takeoff! (1980)
Best of Randall Garrett (1982)
Takeoff, Too (1987)
* Anthologies containing stories by Randall Garrett
The Best from Fantasy and Science Fiction 6th Series (1957)
Analog (1961)
Analog (1961)
Space Opera (1974)
The Infinite Arena (1977)
Weekend Book of Science Fiction (1981)
Election Day 2084: Science Fiction Stories About the Future of Politics (1984)
Time Wars (1986)
Space Wars (1988)
The Ascent of Wonder (1994)
The Mammoth Book of Comic Fantasy (1998)
* Short stories
Time Fuse (1954)
Blaze of Glory (1956)
The Great Kladnar Race (1956) (with Robert Silverberg)
Card Trick (part 3 of 4) (1961) (writing as Mark Phillips)
The Highest Treason (1961)
Hail to the Chief (1962)
A Fortnight of Miracles (1965)
The Final Fighting of Fion Mac Cumhaill (1975)
Frost and Thunder (1979)