Author
- Rashid-al-Din Hamadani1
- Republic of Venice1
- Richard Maidstone1
- Richard Rolle1
- Richard of Middleton1
- Robert Gazeley1
- Robert Holkot1
- Robert Kilwardby1
- Robert de Sorbon1
- Robert of Gloucester1
- Roffredo Epifanio1
- Roman Catholic Archdiocese of Siena1
- Salomon ibn Parhon1
- Sarrazius de Bethencourt1
- Saʻīd Najm al-Dīn ʻAjamī1
- Seigneury de Brousses1
- Sensatus1
- Shams al-Dīn al-Samarqandī1
- Sharif Radhi1
- Sharif al-Murtadha1