Books about Human-alien encounters -- Fiction (sorted alphabetically)
- Galactic Ghost Mack Reynolds
- Get Out of My Body! Tom W. Harris
- Giants From Outer Space Robert W. Krepps
- Gift Bearer Charles L. Fontenay
- Gift For Terra Fox B. Holden
- Gift from Earth Manly Banister
- Girl of the Silver Sphere J. Harvey Haggard
- Girls from Fieu Dayol Robert F. Young
- Goddess of the Moon John Murray Reynolds
- God-Plllnk Jerome Bixby
- Gods of Space Ray Cummings
- Goma's Follicles John De Courcy and Dorothy De Courcy
- Good Neighbors Edgar Pangborn
- Good Seed Mack Reynolds
- Grave of Solon Regh Charles A. Stearns
- Gravity Business James E. Gunn
- Gravy Train Daniel F. Galouye
- Great Green Blight Robert Emmett McDowell
- Green Grew the Lasses Ruth Laura Wainwright
- Green World Hal Clement
- Grounded William Sambrot
- Growing up on Big Muddy Charles V. De Vet
- Guest of Ganymede C. C. MacApp
- guest rites Robert Silverberg
- Gunnison's Bonanza Dick Purcell