Publishers
- T. & A. Constable 1
- T. & A.D. Poyser 40
- T. Allman 1
- T. Buncle & Co. 1
- T. Buncle & Co. Ltd. 1
- T. Cadell 2
- T. Cadell and W. Davies 2
- T. Carnan 1
- T. Egerton 2
- T. Fisher Unwin 12
- T. Fisher Unwin Ltd. 1
- T. Gee 1
- T. N. Foulis 1
- T. Nelson & Sons 25
- T. Nelson & Sons Ltd. 3
- T. Richards 1
- T. Tegg 1
- T. Waller 1
- T. Werner Laurie Ltd. 5
- T.C. & E.C. Jack 12
- T.C. & E.C. Jack Ltd. 13
- T.C.C. Publications 1
- T.E. Schuster 2
- T.F.H. Kingdom 2
- T.F.H. Publications Ltd. 1
- T.F.H. Publications, Inc 2
- T.J. Allman 1
- T.L. Ainsley 1
- T.M.R.S. 1
- T.N. Foulis 4
- T.V. Boardman & Co. Ltd. 1
- T.V. Boardman & Company Limited 2
- T.Y. Crowell & Co. 1
- TAB Books 1
- Tabb House 1
- Tally-Ho Books 1
- Tamara Publications 1
- Tamarind Ltd. 1
- Tango Books 13
- Tank Archives Press 1
- Taplinger Publishing Co., Inc. 1
- Tarquin 1
- Taschen 6
- Tate Gallery 3
- Tate Publishing 2
- Tauris Academic Studies 2
- Taurus Press 1
- Tavistock Publications 1
- Taylor & Francis 3
- Taylor and Francis 1
- Taylor Publishing Company 1
- Teamband Ltd. 1
- Ted Smart 16
- Tees Archaeology 1
- Tegg, Wise & Tegg 1
- Tempest Associates Limited 1
- Templar Publishing 5
- Temple Lodge Publishing 1
- Temple Nostalgia 1
- Temple Press 6
- Temple Press Limited 6
- Temple Smith 1
- Temple University Press 1
- Tempus 40
- Tempus Publishing Ltd 20
- Tempus Reparatum 1
- Ten Speed Press 1
- Tenby Museum 1
- Tennessee University Press 1
- Tentmaker Publications 1
- Teredo Books 2
- Terence Dalton Limited 6
- Tern Press 1
- Terry Underwood 4
- Teton Newmedia 1
- Th. Shroter 1
- Thames and Hudson 36
- Thames Publishing Co. 1
- The Ace Publishing Company 9
- The Actinic Press 1
- The Adventurers Club 1
- The Advertiser Press Ltd. 1
- The Afan Valley Angling Club 1
- The Agricultural Research Corporation 1
- The Air League Of The British Empire 6
- The Albion Press 1
- The Alderman Press 1
- The Alexandra Publishing Co. 3
- The Alpine Club 1
- The Alvis Register 1
- The Amaising Publishing House Ltd. 1
- The Amalgamated Press 50
- The Amalgamated Press Limited 9
- The American Federation of Arts 1
- The American Ornithologists Union 2
- The Ammonite Press 1
- The Architectural Press 5
- The Ariel Press 1
- The Armco International Corporation 1
- The Art & Humour Publishing Co. 1