Author
- Qadi Ayyad1
- Rabīʻah ibn Muḥammad Maʻmarī1
- Raginaldus Collus Rubeus1
- Ricardus, de Mediavilla, approximately 1249-1308?1
- Richard Fishacre1
- Richard de Geveldale1
- Robert de Gretham1
- Roger Bigod, 2nd Earl of Norfolk1
- Rogerius1
- Rolandino de' Passaggeri1
- Roman Catholic Archdiocese of Reims1
- Saadia Gaon1
- Sancho IV of León and Castile1
- Saʻīd ibn Hibat Allāh ibn al-Ḥusayn1
- Sharif Radhi1
- Shaykh ʻAbd Allāh1
- Shelomoh ben Eliyah ha-Melamed1
- Siena1
- Stephen Langton1
- Tha'ālibī1