PG rated sci-fi books

3620 books

Sci-fi books with mild content — safe for most readers. May contain mild peril or fantasy violence but nothing graphic.

City of a Thousand Suns
City of a Thousand Suns
Samuel R. Delany
PG
The Sunken World
The Sunken World
Stanton A. Coblentz
PG
The Space Ship in the Park
The Space Ship in the Park
Louis Slobodkin
PG
Egg Monsters from Mars
Egg Monsters from Mars
R. L. Stine
PG
Time Traveler - Book 1 - The Discovery: Books for Girls aged 9-12
Time Traveler - Book 1 - The Discovery: Books for Girls aged 9-12
Katrina Kahler
PG
Spacehounds of IPC
Spacehounds of IPC
Edward E. Smith
PG
Imperial Earth
Imperial Earth
Arthur C. Clarke
PG
A Malady of Magicks
A Malady of Magicks
Craig Shaw Gardner
PG
The Artificial Man
The Artificial Man
L. P. Davies
PG
Hands of Glory
Hands of Glory
Jaan Kangilaski
PG
The Unnaturalists
The Unnaturalists
Tiffany Trent
PG
Wildraith's Last Battle
Wildraith's Last Battle
Phyllis Ann Karr
PG
Station X
Station X
G. McLeod Winsor
PG
The Humanoids
The Humanoids
Jack Williamson
PG
Moonwar
Moonwar
Ben Bova
PG
How Much for Just the Planet?
How Much for Just the Planet?
John M. Ford
PG
Maiwa's Revenge
Maiwa's Revenge
H. Rider Haggard
PG
Mentor
Mentor
Kris Jensen
PG
The Human Zoo
The Human Zoo
Virginia Ironside
PG
Kent Montana and the Really Ugly Thing from Mars
Kent Montana and the Really Ugly Thing from Mars
Charles L. Grant
PG
Night's Immortal Touch
Night's Immortal Touch
Cheryln Jac
PG
The Flesheaters
The Flesheaters
David Ireland
PG
The Trolltooth Wars
The Trolltooth Wars
Steve Jackson
PG
The Omnificence Factor
The Omnificence Factor
Zach Hughes
PG
Who's Afraid of Beowulf?
Who's Afraid of Beowulf?
Tom Holt
PG
Thrice Upon a Time
Thrice Upon a Time
James P. Hogan
PG
Breakfast of Champions
Breakfast of Champions
Kurt Vonnegut, Jr.
PG
The Puffin Portal (Everyone Can Be a Reader (The Griffin Ma, 2)
The Puffin Portal (Everyone Can Be a Reader (The Griffin Ma, 2)
Vashti Hardy
PG
The Planet Buyer
The Planet Buyer
Cordwainer Smith
PG
Mojo and the Pickle Jar
Mojo and the Pickle Jar
Douglas Bell
PG