- Gebhard & Koerber
- Gebrüder Borntraeger
- Gebrüder Stiepel
- General Motors Products of Canada
- Genéva
- Georg Thieme Verlag
- GIM
- Ginn and Company
- Glavnaya Redakciya Energeticheskoy Literatury
- Gliwice
- Główny Instytut Metalurgii
- Gosudarstvennoe Izdatel'stvo Biologičeskoj i Medicinskoj Literatury
- Gosudarstvennoe izdatel'stvo tehniko-teoretičeskoj literatury
- Gosudarstvennoe naučno-tehničeskoe izdatel'stvo mašinostroitel'noj literatury
- Göttingen
- Government Printing Office
- Grójec
- Grudziądz
- Gsudarstvennoe Izdatel'stvo Sellskohozâjstvennoj Literatury
- Guildford
- Güntter-Staib
- H. Laurens
- Halle
- Hallwag
- Hannover
- Hanower
- Harald Boldt Verlag KG
- Harmondsworth
- Harmondsworth : Penguin Books
- Harper
- Hartleben's Verlag
- Hayden Pub.
- Heidelberg
- Heidelberg Hüthig
- Helion
- Helpmath
- Henry Litolff's Verlag
- Hermann
- Hermann Costenoble
- Hieronim Wilder
- High Wycombe, Bucks
- Historia i Sztuka
- Hitchcock Pub. Co.
- Holzmann
- Houghton Mifflin Company
- Huebner Publications, Inc.
- I. G. Farbenindustrie Aktiengesellschaft
- I.Pitman
- Idstein/Taunus
- IEEE
- Iliffe & Sons
- Iliffe & Sons Ltd. ; Dorset House, Stamford Street
- Iliffe Transport Publications
- IM
- Im Buchhandel durch die Verlagsbuchhandlung Julius Springer
- Im Verlag Ullstein
- Indianapolis
- The Industrial Press.
- Insitute of Physics
- Institute of Energy
