Former Owner
- Rolls1
- Rosamond B. Loring1
- Roy G. Fitzgerald1
- Royaumont Abbey1
- Rudolph B. Gottfried1
- Rudolph Feilding, 8th Earl of Denbigh1
- Rudolphus Rasser Donatus1
- Rugby School1
- Ruth Cheney Streeter1
- S. Ereilter1
- S. S. Conant1
- Sabin1
- Sabina Sopheija Behren1
- Saint-Amand Abbey1
- Saint-Riquier1
- Saluti, Tomasso, active 20th century1
- Samuel Addington1
- Samuel Allan1
- Samuel Eliot1
- Samuel Frederick Houston1