Publishers
- Rockliff 1
- Rod Coleman 1
- Rodcrafters Press, Inc 1
- Roffey And Clark Ltd. 1
- Roger Gordon 1
- Roger Schlesinger 1
- Rolls-Royce Enthusiasts' club 1
- Rolls-Royce Heritage Trust 2
- Rompdown Ltd 2
- Rompford Publications 1
- Ron Jones Publications 2
- Rooke Publishing 1
- Rosenberg 1
- Rossall Archives 1
- Rossendale Books 1
- Rotherwood Press 1
- Round Tower Churches Society 1
- Roundhouse Books 1
- Roundoak Publishing 3
- Routemaster Operators & Owners Association 1
- Routledge 16
- Routledge & Kegan Paul 14
- Routledge & Kegan Paul Ltd 6
- Routledge, Warne, And Routledge 2
- Royal Academy of Arts 3
- Royal Air Force Benevolent Fund Enterprises 2
- Royal Botanic Garden Edinburgh 1
- Royal Botanic Gardens 6
- Royal Collection Enterprises Ltd 1
- Royal Commission On The Historical Monuments Of England 3
- Royal Dublin Society 3
- Royal Horticultural society 1
- Royal Irish Academy 1
- Royal Society Of Chemistry 1
- Royal United Service Institution 1
- Royle Publications Ltd. 2
- Rudd & Co. 1
- Rudgen Services 1
- Rudolf Muller 1
- Rudolf Steiner 1
- Rudolf Steiner Press 1
- Running Press 1
- Runnymede Malthouse Publishing 1
- Rupani Media 1
- Rupert Hart-Davis 7
- Rutgers University Press 2
- Rutten & Loening Berlag 1
- Ryelands 1
- S. Endacott 1
- S. Guiterman & Co. Ltd. 1
- S.A. & M.J. Raymond 3
- S.B. Publications 1
- S.C. Brown, Langham & Company Ltd. 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. 10
- S.W. Partridge & Co. Ltd. 17
- Saalfield 1
- Sackett And Marshall 1
- Sackville Smeets Limited 1
- SAE International 1
- Sage Publications 5
- Said Internationa Ltd 1
- Saiga Publishing Co. Ltd. 3
- Saintin 1
- Salamander Books Ltd 2
- Salbaroli-Ravenna 1
- Sam Publications 4
- Sampson Low 33
- Sampson Low, Marston 1
- Sampson Low, Marston & Co. 19
- Sampson Low, Marston & Co. Ltd. 151
- Sampson Low, Marston, Searle, & Rivington 7
- Sampson Low, Son & Co. 1
- Sampson Low, Son & Marston 2
- Samuel Baxter's & Sons 1
- Samuel Fauche 1
- Samuel Harding 1
- Samuel Walker Ltd 3
- Sanders, Phillips & Co. Ltd. 1
- Sandhill Press 1
- Sandle Brothers Ltd. 16
- Sandle's 1
- Sands & Co. 2
- Sands and Co. 2
- Sangam Books 1
- Santona Publications 2
- Sapling 1
- Saunders and Otley 1
- Saunders College Publishing 1
- Saxon & Lindstroms Forlag 1
- Scala Books 1
- Scala Publishers 3
- Scalo 1
- Scalo Zurich 1
- Scandinavian National Committees Of The Internation Biology Programme 1
- Scandinavian Science Publisher 1