Publishers
- George Routledge & Sons Ltd. 38
- George Routledge and Co. 1
- George Routledge and Sons Limited 2
- George Rowney And Co. 1
- George Rutland 1
- George Stoneman 1
- George Virtue 1
- George Weidenfeld and Nicolson 3
- George Woolley 1
- George Young 1
- Gerald G. Swan 1
- Gerard Gaston Grange 2
- Gestalten 1
- Gibbs Smith, Publisher 1
- Gieves Limited 1
- Gilbert And Hodges 1
- Gill & Macmillan Ltd 1
- Ginn and Company 3
- Giorgio Apostolo Editore 1
- Giorgio Nada Editore 4
- Girl's Own Paper 6
- Girls Gone By 25
- Giunti 2
- Giunti Barbera 1
- Glamorgan Archive Service 1
- Glamorgan County History Trust 2
- Glasgow Corporation Public Libraries 1
- Global Motorsport Group Gmbh 1
- Gloucestershire County Council 1
- GMS Enterprises 6
- Goddard, Walker & Brown, Ltd. 1
- Godfrey Cave 2
- Goerge Prior 1
- Golden Press 1
- Golden Valley Publications 1
- Goldstar Holdings 1
- Gollancz 1
- Gomer 3
- Gomer Press 9
- Goncalo Elias 1
- Gono Studio 1
- Good Read Publishing 2
- Good Reading Limited 1
- Goodwood Road Racing Club 2
- Goodwood Road Racing Company Ltd 1
- Goose and Son 1
- Gordon Forrest 1
- Gordon Fraser Gallery 1
- Government Of India 3
- Government Of West Bengal 3
- Government Press, Bulaq 1
- Government Printing Office, Washington 1
- Gowans & Gray Ltd. 1
- Gower 1
- Gower Press 1
- Grafton Books 1
- Graham & Trotman Limited 1
- Graham Gauld 1
- Graham Shipman 1
- Gralene Books 1
- Gramercy Books 3
- Gramol Publications Ltd. 1
- Granada 6
- Grandreams Limited 5
- Grange Books 4
- Grant and Griffith 3
- Grant Richards 22
- Grant Richards Ltd. 2
- Granta 1
- Granta Books 1
- Granta Editions 1
- Graphic Publishers 2
- Grass, Barth & Comp. (w. Friedrich) 1
- Grasshopper 1
- Grayson & Grayson 1
- Great Bear Publishing 2
- Great Eastern Publishing 1
- Great Eastern Railway Society 1
- Great Northern Books 11
- Great Ouse Press 1
- Great Western Railway Company 1
- Green Tiger Press 1
- Greenhill Books 24
- Greening & Co. Ltd. 2
- Greenwich Editions 5
- Greenwillow Books 1
- Greenwood Press 1
- Grenadier Books 1
- Grenville Publishing Company Limited 3
- Greystone Books 2
- Grid Publishing 1
- Griffin Press 1
- Griffith and Farran 5
- Griffith Farran & Co. 3
- Griffith Farran Browne & Co Limited. 4
- Griffith Farran Browne & Co. Ltd. 1
- Griffith Farran Okeden & Welsh 4
- Griffith, Farran, Browne & Co. 1
- Griffith, Farran, Okeden & Welsh 1
- Groombridge & Sons 6