Author
- Qāz̤ī Muḥammad Aʻlá1
- Rabanus Maurus1
- Raghudeva Nyāyālaṅkāra1
- Ramon Llull1
- Rashi1
- Raymond of Sabunde1
- Richard Bolter1
- Richard Burdet1
- Richard II of England1
- Richard Ward1
- Richard of Saint Victor1
- Robert Cooke1
- Robert de Saint-Martin1
- Roberto Caracciolo1
- Roman Catholic Archdiocese of Mainz1
- Roman Catholic Archdiocese of Siena1
- Roman Catholic Diocese of Regensburg1
- Royal Chancellery of Granada1
- Rucidattamiśra1
- Rukn ibn Sharaf al-Dīn Āmulī1