Publishers
- Towarzystwo Akcyjne 1
- Tower Press 1
- Town & Country Press 1
- Town County Books 1
- Town House 1
- Town House & Country House 1
- Trackmaps 1
- Trade & Travel Publications 1
- Tramroad House 1
- Transatlantic Arts Ltd. 5
- Transport Bookman Publications 7
- Transport Publishing Co. Ltd. 1
- Transport Treasury Publishing Ltd 2
- Transpress 1
- Transworld Publishers Ltd. 1
- Traplet Publications 1
- Travel Publishing 1
- Treasure Library 1
- Tredegar Historical Society 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
- Trident Press 1
- Trimik Publishing 1
- Trinity University Press 1
- Trois Conils 1
- Trollius Publications 1
- Trondheim 1
- Trubner & Co. 1
- True North 3
- Tucann 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
- Tuttle Publishing 1
- Tweenbrook Publishing 1
- Twin Pines Press 1
- Two Crows Books 1
- Two Hoots 3
- Two Lions 1
- Tyndall 1
- Tyne And Wear Museums 1
- Tyne Bridge Publishing 1
- Tynron Press 1
- Ueberreuter 1
- Uitgeverij De Alk 1
- Ulster Architectural Heritage Society 1
- Ulster Historical Foundation 1
- Umberto Allemandi & C. 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 Birmingham 1
- University of British Columbia 1
- University of Calcutta 1
- University of California 1
- University of California Press 7
- University of Chicago Press 7
- University Of Exeter 1
- University Of Florida 1
- University Of Glasgow 1
- University Of Helsinki 1
- University Of Lausanne 1
- University of Leicester 2
- University of Liverpool 1
- University Of London 2
- University of London Press 8
- University of London Press Ltd. 29
- University Of Massachusetts Press 1
- University of Michigan 3
- University Of Michigan Press 1
- University Of Minnesota Press 1
- University Of Missouri Press 1
- University of Nebraska 5
- University Of New Mexico 1
- University Of New South Wales Press 1