Publishers
- John F. Shaw & Co Ltd. 35
- John F. Shaw & Co. 16
- John Fairfax & Sons 1
- John Gifford Ltd. 2
- John Goodchild 1
- John Hallewell Publications 1
- John Hamilton 14
- John Hamilton Ltd. 21
- John Harris 4
- John Henry Parker 2
- John Heywood 1
- John Lane 4
- John Lane The Bodley Head 50
- John Lane The Bodley Head Limited 25
- John Lehmann 1
- John Leng 7
- John Leng & Co. Ltd. 6
- John Long 1
- John Mason 1
- John Mathew Gutch 1
- John Miller 1
- John Murray 50
- John Murray (publishers) 1
- John Murray (publishers) Ltd. 2
- John Peters, The Woodcock Press 1
- John Player & Sons 1
- John Pryse 2
- John Searight 1
- John Snow 1
- John Swain & Son Limited 17
- John Van Voorst 8
- John W. Parker 1
- John Weale 1
- John Weatherhill 1
- John White 1
- John Wiley & Sons 38
- John Wiley & Sons Ltd. 3
- John Wylie & Co 1
- Joint Nature Conservation Committee 1
- Jonathan Cape 131
- Jonathan Clark Fine Art 1
- Jonathan Thompson 1
- Jones & Co 2
- Jones And Co. 1
- Joseph Johnson 1
- Joseph Lucas Ltd. 1
- Joseph Masters 1
- Joseph Swan 1
- Joseph Thomas 1
- Joseph Williams 1
- Joseph Williams Limited 1
- Joseph, Myers & Co. 1
- Joshua Morris Publishing 1
- Journal-Verlag 1
- Jr Marketing 2
- Judy Piatkus (publishers) Limited 2
- Julia MacRae Books 13
- Julian Messner Inc. 1
- Julius Springer 3
- Juniper House Library 1
- Juvenile Productions 2
- Juvenile Productions Ltd. 29
- K. & R. Books Ltd. 1
- Kagero 1
- Kalmbach Books 1
- Kangaroo Press 1
- Karl Baedeker 1
- Katharine Parr 1
- Katherine Tegen Books 1
- Kattenkabinet 1
- Kaye & Ward 7
- Kaye & Ward Ltd. 17
- Kea Publishing 1
- Kegan Paul, Trench & Co. 2
- Kegan Paul, Trench, Trubner & Co. 3
- Kegan Paul, Trench, Trubner & Co. Ltd. 5
- Kehrer Heidelberg Berlin 1
- Keith Reid 1
- Kelly's Directories Ltd. 2
- Kelsey Publishing Ltd 2
- Ken Publications 1
- Ken Trotman Publishing 1
- Kenilworth Press 1
- Kenneth Mason 1
- Kennys Bookshops & Art Galleries Ltd. 1
- Kensington Publishing Corp 1
- Kent & Co. 1
- Kent County Cricket Club 2
- Kessinger Publishing 1
- Kestrel Books 24
- Kestrel Railway Books 5
- Kettlewell Transportation Information Trade Services 1
- Kevin Weldon And Associates Pty Ltd 1
- Key Porter Books 2
- Kibworth Books 1
- Kimberley's 1
- Kindredson Publishing 1
- King's College Cambridge 1
- Kingfisher 1
- Kingfisher Railway Productions 1