Author
- Razi al-Din ibn al-Hanbali1
- Raḍī, Muḥammad ibn ʻAlāʾ al-Dīn1
- Refael Mordekhai Malki1
- Refaʼel di Fontanella1
- Refiʻı̂1
- Renchius, Henricus1
- Revanî1
- Rifāʾī, Muḥammad ibn ʻAlwān1
- Robert Ashley1
- Robert Cooke1
- Robert de Saint-Martin1
- Roberto Caracciolo1
- Rodolfo Pio da Carpi1
- Roman Catholic Archdiocese of Mainz1
- Rucidattamiśra1
- Rukn al-Dīn ʻĀshiq1
- Rukn ibn Sharaf al-Dīn Āmulī1
- Rutilius Taurus Aemilianus Palladius1
- Ruzbihan Baqli1
- Rājiḥ ibn Ismāʻīl Ḥillī1