Publishers
- Rider & Co. 1
- Rihan. CC 1
- Rijksmuseum Amsterdam 1
- Rila 2
- Riley Motors Limited 2
- Rily Publications Ltd 1
- Ringpress Books 12
- Ripley Entertainment Inc. 1
- Rixon Groove 2
- Roadliner Transport Books 1
- Rob Blann 1
- Robert Culley 2
- Robert Frederick Ltd. 1
- Robert Gosling 1
- Robert Grant & Son 1
- Robert Grant & Son, Ltd. 1
- Robert Griffith 1
- Robert Hale 19
- Robert Hale Limited 10
- Robert Jennings 1
- Robert Maclehose And Co. Ltd 1
- Robert Pooley Ltd. 1
- Robert Saunderson 2
- Robert Schwandl 1
- Robert Scott 1
- Robert Stodart 1
- Robert Tyas 1
- Roberts 3
- Roberts Brothers 2
- Robertson & Mullens Ltd. 1
- Robin Brass Studio 1
- Robin Hood Publishing 1
- Robin Smith 1
- Robinson Publishing 2
- Robinson Publishing Ltd 1
- Robson And Clarke 2
- Robson Books 5
- Rochester Press 1
- Rock The Boat 1
- Rocking Books 1
- 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
- Rosenberg 1
- Rossall Archives 1
- Rotherwood Press 1
- Round Tower Churches Society 1
- Roundhouse Books 1
- Roundoak Publishing 3
- Routemaster Operators & Owners Association 1
- Routledge 18
- Routledge & Kegan Paul 14
- Routledge & Kegan Paul Ltd 5
- Routledge, Warne, And Routledge 2
- Royal Academy of Arts 6
- Royal Air Force Benevolent Fund Enterprises 2
- Royal Botanic Garden Edinburgh 2
- Royal Botanic Gardens 4
- Royal Collection Enterprises Ltd 1
- Royal Commission On The Historical Monuments Of England 4
- 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 Press 1
- Running Press 1
- Runnymede Malthouse Publishing 1
- Rupert Hart-Davis 6
- 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.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. 11
- S.W. Partridge & Co. Ltd. 17
- Saalfield 1
- Sackett And Marshall 1
- Sackville Smeets Limited 1
- Saddleworth Historical Society 1
- SAE International 1