Author
- Porcellio1
- Qāḍī Zāda al-Rūmī1
- Rapolano Terme1
- Richard Burdet1
- Richard Treby1
- Roman Catholic Archdiocese of Siena1
- Roman Catholic Diocese of Zaragoza1
- Roman Curia1
- Rupert, Count Palatine of Simmern1
- Rutilius Taurus Aemilianus Palladius1
- Sacro Regio Consiglio1
- Safi al-Din al-Urmawi1
- Santa Maria in Portico a Fontegiusta1
- Saʻīd Najm al-Dīn ʻAjamī1
- Shahab al-Din al-Hijazi1
- Shams-ud-Din Kermani1
- Sharaf ad-Din Ali Yazdi1
- Siena1
- Signoria of Florence1
- Simone di Nicolo Petroni1