Former Owner
- Robert Garrett2
- Robert Hoe III2
- Robert Lehman3
- Robert Lenkiewicz1
- Robert Wyer1
- Robert de Hangest1
- Royaumont Abbey1
- Rudolph B. Gottfried1
- Samuel Whitaker Pennypacker1
- San Giorgio Monastery1
- San Pietro Apostolo1
- Sant Pere de Rodes1
- Santi Giovanni e Paolo1
- Sarrià Capuchins1
- Sebastianus Severus1
- Sephan de Perusio1
- Seymour Stocker Kirkup1
- Sigurd Wandel17
- Silas W. Howland1
- Simhah Pinsker1