Author
- Raginaldus Collus Rubeus1
- Raymond of Penyafort1
- Richard II of England1
- Roger Bigod, 2nd Earl of Norfolk1
- Roman Catholic Archdiocese of Siena1
- Saadia Gaon1
- Sarrazius de Bethencourt1
- Saʻīd ibn Hibat Allāh ibn al-Ḥusayn1
- Sebastian Schindler1
- Seigneury de Brousses1
- Serapion the Younger1
- Shams al-Dīn Shāfiʻī1
- Siena1
- Stephanus Hugoneti1
- Sylvester II1
- Taddeo Alderotti1
- Theobaldus Episcopus1
- Thiebaus de Maliers1
- Thomas Brooke1
- Thomas of Cantimpré1