Author
- Ravana1
- Raymond of Penyafort1
- Raymond of Sabunde1
- Rayḥān Āghā ibn ʻAbd Allāh1
- Refael Mordekhai Malki1
- Refiʻı̂1
- Republic of Venice1
- Revanî1
- Reynoldus Romanus1
- Richard de Fournival1
- Robert Ashley1
- Robert Cooke1
- Robert de Saint-Martin1
- Roberto Caracciolo1
- Rodolfo Pio da Carpi1
- Roman Catholic Archdiocese of Mainz1
- Roman Catholic Diocese of Zaragoza1
- Rucidattamiśra1
- Rudradeva1
- Rudradhara1