Publishers
- Roundhouse Books 1
- Roundoak Publishing 3
- Routledge 21
- Routledge & Kegan Paul 17
- Routledge & Kegan Paul Ltd 3
- Routledge, Warne, And Routledge 2
- Royal Academy of Arts 5
- Royal Air Force Benevolent Fund Enterprises 4
- Royal Air Force Historical Society 1
- Royal Botanic Garden Edinburgh 2
- Royal Botanic Gardens 4
- Royal Collection Enterprises Ltd 1
- Royal Commission On The Historical Monuments Of England 3
- Royal Dublin Society 4
- Royal Geographical Society 1
- Royal Horticultural society 1
- Royal Irish Academy 4
- Royal Mint 1
- Royal Naval Museum 1
- Royal Society Of Chemistry 1
- Royal United Service Institution 4
- Ruch Ltd Ab 1
- Rudd & Co. 1
- Rudge Whitworth Ltd. 1
- Rudgen Services 1
- Rudolf Muller 1
- Rudolf Steiner 1
- Running Press 1
- Runnymede Malthouse Publishing 2
- Runpast Publishing 2
- Rupert Hart-Davis 3
- Rush & Warwick 1
- Rutgers University Press 3
- Rutland County Museum 1
- Rutten & Loening Berlag 1
- Ryelands 1
- Rylee Ltd. 1
- Rzm Publishing 1
- S. Endacott 1
- S. Guiterman & Co. Ltd. 1
- S.A. & M.J. Raymond 4
- S.B. Publications 1
- S.C. Brown, Langham & Company Ltd. 1
- S.C.Fung 1
- S.C.M. Press Ltd. 1
- S.D.J. Publications 3
- S.H. Bousfield & Co. Ld. 1
- S.P.C.K. 1
- S.R. Publishers Ltd. 4
- S.W. Partridge & Co. 13
- S.W. Partridge & Co. Ltd. 24
- Saalfield 1
- Sackett And Marshall 1
- Sackville Smeets Limited 1
- Saddleworth Historical Society 1
- SAE International 1
- Sage Publications 5
- Said Internationa Ltd 1
- Saiga Publishing Co. Ltd. 2
- Saint Andrew Press 1
- Saintin 1
- Salamander Books Ltd 2
- Salbaroli-Ravenna 1
- Salem House Publishers 1
- Sam Publications 7
- Sampson Low 33
- Sampson Low, Marston 1
- Sampson Low, Marston & Co. 19
- Sampson Low, Marston & Co. Ltd. 193
- Sampson Low, Marston, Searle, & Rivington 6
- Sampson Low, Son & Co. 1
- Sampson Low, Son & Marston 4
- Samuel Baxter's & Sons 1
- Samuel Fauche 1
- Samuel Harding 1
- Samuel Walker Ltd 3
- Sanders, Phillips & Co. Ltd. 1
- Sandle Brothers Ltd. 17
- Sandle's 1
- Sandpiper Books 1
- Sands & Co. 2
- Sands and Co. 1
- Sangam Books 1
- Sansom & Company 2
- Santona Publications 2
- Sapling 1
- Saunders and Otley 1
- Saunders College Publishing 1
- SAVE Britain's Heritage 1
- Saxon & Lindstroms Forlag 1
- Scala Books 1
- Scala Publishers 4
- Scalo 1
- Scalo Zurich 1
- Scandinavian National Committees Of The Internation Biology Programme 1
- Scandinavian Science Publisher 1
- Scarborough Borough Council 1
- Sceptre 1
- Scheidegger & Spiess 2
- Schiffer Aviation History 1