Former Owner
- Sidney Graves Hamilton1
- Sigmund Ortel1
- Sigurd Wandel1
- Simon De Santander1
- Simon Digby1
- Simḥah Zimel ben Shalom Shliṭas1
- Sion Segre Amar1
- Sir Richard Ellys, 3rd Baronet1
- Skinner Poulin1
- Sonnyng, John1
- Sonnyng, William1
- Sorabji Framji Madan1
- Stella Kramrish1
- Stephan Rosinus1
- Stiftsbibliothek Kremsmünster1
- Swarthmore College1
- Süleyman Çelebi1
- Talcott Williams1
- Taqī ibn ʻAlī al-Qummī1
- Thomas Rodd1