- Religious ethics1
- Requesens, Antonio de'1
- Requesens, Berengario de'1
- Requesens, Bernardo de'1
- Requesens, Giuseppe de'1
- Ressano, Catterina1
- Ressano, Giovanni1
- Risālah (Ibn Abī Zayd al-Qayrawānī, ʻAbd Allāh ibn ʻAbd al-Raḥmān)1
- Rome (Empire)1
- Romera, Carlo1
- Salviati, Jacopo1
- Samaritans1
- Sangalletti, Bastiano1
- Sangalletti, Vittoria1
- Santa Maria Novella (Church : Florence, Italy)1
- Saudi Arabia--Mecca1
- Saudi Arabia--Medina1
- Scalandroni family1
- Shamsīyah (Qazwīnī, ʻAlī ibn ʻUmar)1
- Shiites1