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.

The Moons of Jupiter
The Moons of Jupiter
Isaac Asimov
PG
The Forbidden
The Forbidden
R. L. Fanthorpe; Patricia Fanthorpe
PG
Unveiling a Parallel: A Romance
Unveiling a Parallel: A Romance
Alice Ilgenfritz Jones; Ella Merchant
PG
Somebody Help Me
Somebody Help Me
Beverly Hastings
PG
Changeling Hearts
Changeling Hearts
Simon Harding
PG
Sentry Peak
Sentry Peak
Harry Turtledove
PG
Beyond the Void
Beyond the Void
R. L. Fanthorpe; Patricia Fanthorpe
PG
The Last Stand
The Last Stand
Brad Ferguson
PG
The Day the World Ended
The Day the World Ended
Sax Rohmer
PG
Wind in the Stone
Wind in the Stone
Andre Norton
PG
Treachery in Outer Space
Treachery in Outer Space
Carey Rockwell
PG
Half Life
Half Life
Hal Clement
PG
Atomic Nemesis
Atomic Nemesis
R. L. Fanthorpe; Patricia Fanthorpe
PG
Blue Moon Rising
Blue Moon Rising
Simon R. Green
PG
The Main Experiment
The Main Experiment
Christopher Hodder-Williams
PG
Threshold of the Stars
Threshold of the Stars
Paul Berna
PG
The Land of No Shadow
The Land of No Shadow
Carl H. Claudy
PG
Earth, the Marauder
Earth, the Marauder
Arthur J. Burks
PG
The Green of Me
The Green of Me
Patricia Lee Gauch
PG
The Fatal Revenge; or, The Family of Montorio
The Fatal Revenge; or, The Family of Montorio
Charles Maturin
PG
Edge of Extinction #2: Code Name Flood
Edge of Extinction #2: Code Name Flood
Laura Martin
PG
Probability Sun
Probability Sun
Nancy Kress
PG
Farmer in the Sky
Farmer in the Sky
Robert A. Heinlein
PG
Ungifted
Ungifted
Gordon Korman
PG
The School for Whatnots
The School for Whatnots
Margaret Peterson Haddix
PG
The Lost City
The Lost City
David Arthur Griffiths
PG
A Scattering of Jades
A Scattering of Jades
Alexander C. Irvine
PG
Shadows Bend
Shadows Bend
David Barbour; Richard Raleigh
PG
The Titan of Twilight
The Titan of Twilight
Troy Denning
PG
Copper
Copper
Rebecca Lisle
PG