Publishers
- Tidewater Publishers 1
- Tiger Books International 2
- Timber Press 5
- Timberholme Books 1
- Times Books 5
- Tinsley Brothers 2
- Titan Books 1
- Titus Wilson & Son, Ltd. 1
- Tlc Publishing Inc. 3
- Toby Twirl Ltd. 2
- Todtri 2
- Tom Dickins Fine Art 4
- Tom Donovan 1
- Tom Purves 1
- Tomahawk Films 1
- Tomorrow River Press 1
- Top Sellers Ltd. 3
- Tor Mark Press 2
- Toronto Public Library 3
- Touchstone Books 1
- Tourrett Publishing 2
- Towarzystwo Akcyjne 1
- Town & Country Press 1
- Town County Books 1
- Town House 1
- Town House & Country House 1
- Trackmaps 2
- Trade & Travel Publications 1
- Tramroad House 1
- Transatlantic Arts Limited 1
- Transatlantic Arts Ltd. 6
- Transport Bookman Publications 8
- Transport Treasury Publishing Ltd 1
- Transpress 1
- Transworld Publishers Ltd. 2
- Traplet Publications 1
- Travel Publishing 1
- Treasure Library 1
- Treasure Press 1
- Trefoil Books 1
- Trefoil Publications 1
- Trent Valley Publications 1
- Treowen Press 1
- Trevor A. Bevis 1
- Trevor Bevis 1
- Triangle Publishing 1
- Tribune 1
- Trois Conils 1
- Trollius Publications 1
- Trondheim 1
- Trubner & Co. 1
- True North 2
- Truran 1
- Tuckwell Press 1
- Tudor Journals 1
- Tudor Printing Works 1
- Tuna Roll Publications Ltd 1
- Tunbridge Wells High School 1
- Turbo Machinery 1
- Turner Publishing, Inc. 1
- Turntable Publications 3
- Turret Books 1
- Turton & Armstrong 1
- Turton & Chambers 1
- Tweenbrook Publishing 1
- Twelveheads Press 1
- Two Crows Books 1
- Two Hoots 2
- Two Lions 1
- Tyndall 1
- Tyne Bridge Publishing 1
- Tynron Press 1
- Ueberreuter 1
- Uitgeverij De Alk 1
- ULDM Publications 1
- Umberto Allemandi & C. 1
- Unbound 1
- Unicef 1
- Unicorn 1
- Unione Tipografico 1
- Unique Motor Books 1
- United Council For Missionary Education 2
- United States Department Of The Interior 1
- Universa Wetteren 1
- Universal Books 1
- Universe Publishing 3
- University Botanic Garden Cambridge 1
- University College Cardiff 3
- University College Of Cape Breton Press 1
- University College of North Wales 1
- University of Aberdeen 2
- University of Calcutta 1
- University of California 1
- University of California Press 6
- University of Chicago Press 8
- University Of Exeter 1
- University Of Glasgow 1
- University Of Helsinki 1
- University Of Lausanne 1
- University of Leicester 2