Former Owner
- Richard McKeon1
- Richard Priestley1
- Rinaldo Ridolfini1
- Robert Brodhead Honeyman1
- Robert Garrett3
- Robert Hoe III8
- Robert Oppenheim1
- Robert S. Pirie1
- Robert Villareal1
- Roger Martin1
- Ross Winans1
- Rudolf Graupner1
- Rush Hawkins1
- Ruth E. Adomeit1
- Ruth Fowler Jarvis1
- Saluti, Tomasso, active 20th century1
- Samuel Allan1
- Samuel David Luzzatto1
- Samuel P. Avery Jr.1
- Samuel Petit1