Former Owner
- Quinton Edward Gurney1
- Qusṭanṭīn ibn Lūdūlf1
- Qāsim al-Īrawānī1
- Rafael Gomes1
- Raphael Nathan Nata Rabinowitz1
- Rashīdī, Ibrāhīm1
- Rashīdī, Ibrāhīm ibn Yūsuf5
- Raymond Oliver1
- Reuschenberg, Margreta von1
- Richard Halter1
- Richard Heber3
- Richard James Horatio Gottheil1
- Richard McKeon1
- Richard Rich1
- Robert Brodhead Honeyman3
- Robert Churchill1
- Robert Dallas1
- Robert Dechert1
- Robert Hoe III2
- Robert Lenkiewicz1