Author
- Roman Catholic Archdiocese of Siena3
- Roman Catholic Diocese of Arezzo3
- Roman Catholic Diocese of Osma-Soria1
- Roman Catholic Diocese of Regensburg1
- Roman Catholic Diocese of Zaragoza1
- Roman Curia1
- Royal Audiencia of Lima1
- Royal Chancellery of Granada2
- Rozanes, Yosef, 15th century1
- Rucidattamiśra1
- Rudradeva1
- Rudradhara1
- Rudulphus Bollartus1
- Rui de Pina1
- Ruiz de Alarcon, Jorge1
- Rukn al-Dīn ʻĀshiq1
- Rukn ibn Sharaf al-Dīn Āmulī1
- Rumi18
- Rupert, Count Palatine of Simmern1
- Rutgerus Hartman1