Author
- Riyazi2
- Riḍwān ibn ʻAbd Allāh Razzāz1
- Ro. Ba1
- Robert Ashley1
- Robert Beale1
- Robert Cooke3
- Robert Fabyan1
- Robert Gazeley1
- Robert Grosseteste8
- Robert Holkot1
- Robert Kilwardby1
- Robert Reade1
- Robert de Gretham1
- Robert de Saint-Martin1
- Robert de Sorbon1
- Robert of Gloucester1
- Roberto Caracciolo1
- Robine Bordinelle1
- Rocca, Antonio1
- Rodolfo Pio da Carpi1