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.

21st Century Blues
21st Century Blues
Steve Walker
PG
Collision Course
Collision Course
E. C. Tubb
PG
Needle
Needle
Hal Clement
PG
Messiah
Messiah
Gore Vidal
PG
Spaceways
Spaceways
Charles Eric Maine
PG
The Caves of Steel
The Caves of Steel
Isaac Asimov
PG
The Solitaire Mystery
The Solitaire Mystery
Jostein Gaarder
PG
Rogue in Space
Rogue in Space
Fredric Brown
PG
The Mind Thing
The Mind Thing
Fredric Brown
PG
God's Dice
God's Dice
S. Andrew Swann
PG
Marooned in Realtime
Marooned in Realtime
Vernor Vinge
PG
Picoverse
Picoverse
Robert A. Metzger
PG
Centuries
Centuries
A. A. Attanasio
PG
Paint Your Dragon
Paint Your Dragon
Tom Holt
PG
Tom Swift and His Giant Magnet
Tom Swift and His Giant Magnet
Victor Appleton
PG
Island of Fire (The Unwanteds)
Island of Fire (The Unwanteds)
Lisa McMann
PG
The Widow's Son
The Widow's Son
Robert Anton Wilson
PG
Overtime
Overtime
Tom Holt
PG
Jem
Jem
Frederik Pohl
PG
The X Files: Mulder and Scully Approved: The Ultimate Unofficial Fan Guide to Monsters, Myths, and the Truth
The X Files: Mulder and Scully Approved: The Ultimate Unofficial Fan Guide to Monsters, Myths, and the Truth
Giles Fairweather
PG
Star Rangers
Star Rangers
Andre Norton
PG
Invisible Cities
Invisible Cities
Italo Calvino
PG
Elvenblood
Elvenblood
Andre Norton; Mercedes Lackey
PG
Moon of Three Rings
Moon of Three Rings
Andre Norton
PG
Star Guard
Star Guard
Andre Norton
PG
Star Man's Son, 2250 A.D.
Star Man's Son, 2250 A.D.
Andre Norton
PG
Exiles of the Stars
Exiles of the Stars
Andre Norton
PG
The Lions of Fifth Avenue
The Lions of Fifth Avenue
Fiona Davis
PG
Gryphon in Glory
Gryphon in Glory
Andre Norton
PG
Heechee Rendezvous
Heechee Rendezvous
Frederik Pohl
PG