Publishers
- Simon & Schuster 16
- Simon & Schuster Ltd. 1
- Simon & Schuster Uk Ltd 3
- Simon & Schuster, Inc. 1
- Simpkin Marshall Ltd. 1
- Simpkin, Marshall 4
- Simpkin, Marshall & Co. 12
- Simpkin, Marshall And Company Limited 1
- Simpkin, Marshall, Hamilton, Kent & Co. Ltd. 6
- Sinclair-Stevenson Ltd. 1
- Singapore Art Museum 1
- Sir Isaac Pitman 1
- Sir Isaac Pitman & Sons Ltd. 14
- Sir Richard Nicholson 1
- Sir William Russell Flint Galleries Ltd. 1
- Skeffington & Son 1
- Skeffington & Son, Ltd. 1
- Skira 2
- Skira Rizzoli Publications, Inc. 1
- Skol Vreizh 1
- Skrudda Ehf. 2
- Sky Books Press 1
- Skyhook Press 1
- Slavica 1
- Slazengers Ltd. 1
- Smith Settle Ltd. 1
- Smith, Elder & Co. 15
- Smithmark 2
- Smithmark Publishers, Inc. 1
- Smiths Industrial Instruments Ltd. 1
- Smithsonian Books 1
- Smithsonian Institution 2
- Smithsonian Institution Press 5
- Snowdonia National Park Authority 1
- Societe Academique 1
- Societe Typographique Belge 1
- Society For Companion Animal Studies 1
- Society For Industrial And Applied Mathematics 1
- Society for Promoting Christian Knowledge 46
- Society For The Bibliography Of Natural History 2
- Society For The History Of Natural History 1
- Society For The Promotion Of Roman Studies 2
- Society Of Antiquaries Of Newcastle Upon Tyne 1
- Society Of Motor Manufacturers & Traders Ltd. 2
- Solo 1
- Somers 1
- Somersetshire Archaeological Natural History Society 1
- Somerville House Publishing 3
- Sonnick Publications 1
- Sono Nis Press 1
- Sort Of Books 1
- Sotheby Parke Bernet 1
- Sotheby Publications 1
- Sotheby's 1
- Sotherby 1
- South Africa Bird Book Fund 1
- South Bank Centre 2
- South Dakota School Of Mines 1
- South Metropolitan Gas Company 2
- South Platte Press 1
- South Wales Record Society 3
- Southampton University Industrial Archaeology Group 1
- Southend Museums Service 1
- Southern Book Publishers 1
- Souvenir Press 13
- Spa Books 1
- Spantech & Lancer 1
- SPCK 1
- Speciality Press 5
- Speedman Press Ltd 1
- Spellmount 2
- Spellmount Ltd. 9
- Spellmount Publishers 1
- Spindlewood 2
- Spink & Son Ltd. 1
- Spire Books Ltd 1
- Spokesman Books 1
- Sporting Handbooks Ltd. 1
- Spottiswoode & Co. 1
- Spottiswoode, Ballantyne & Co. Ltd. 1
- Spring Books 6
- Springer 92
- Springer ScienceBusiness Media 1
- Springer-Verlag 29
- Spur Publications 3
- Squadron Signal Publications 7
- Square One Publications 2
- St Matthew's Press 1
- St. Anthony's Press 2
- St. Catherine Press 3
- St. Clements Press, Ltd. 1
- St. Edward's School Society 5
- St. James Press 1
- St. Lukes Press 1
- St. Martin's Press, New York 2
- St. Nicholas Books 1
- Stacey International 1
- Stackpole Books 11
- Stainer & Bell Ltd. 1
- Standaard Uitgeverij 1