Former Owner
- Sayn Abbey1
- Schenck'sche Fide-Kommiss-Bibliothek1
- Schloss Nordkirchen1
- Schøyen Collection1
- Scott Gwara4
- Sebastiano Calvi1
- Sebastianus Severus1
- Sebastienne Boscher1
- Sebolt1
- Seitenstetten Abbey2
- Sephan de Perusio1
- Seymour de Ricci1
- Sidney Graves Hamilton1
- Sigmund Ortel1
- Sigurd Wandel62
- Silas W. Howland2
- Silvester Cattaneus1
- Simon Gratz3
- Simon Jason Schwartz1
- Sion College1