Former Owner
- Robert Elyot1
- Robert Garrett7
- Robert Hoe III3
- Robert Lyle1
- Robert Treswell1
- Robert Walker1
- Robert Wyer1
- Roger North, 2nd Baron North1
- Rowland Oseley1
- Rudolph B. Gottfried1
- Rugby School1
- Ruth Fowler Jarvis1
- S. S. Conant1
- Samuel Frederick Houston1
- Samuel Pegge1
- Samuel Whitaker Pennypacker1
- Samuel Wix1
- Samuell Bouter1
- Scroop Egerton, 1st Duke of Bridgewater1
- Sigurd Wandel1