- Rueda, Luis de, active 1553-15691
- Rueda, Rodrigo de, active 1553-15691
- Rules1
- Russia (Federation)--Dagestan1
- Russia (Federation)--Tarki1
- Rüstem Paşa Camii (Istanbul, Turkey)1
- Sacchetti, Angiolo1
- Sacraments--Catholic Church1
- Saint-Victor (Abbey : Paris, France)1
- Sales (Islamic law)1
- Samaritan Aramaic language1
- Samaritans2
- Samarqandī, Muḥammad ibn Ashraf, active 13th century. Ashkāl al-taʼsīs5
- San Miguel, Josefa de, active 1683-16851
- Satellites--Phases1
- Saudi Arabia--Mecca2
- Saudi Arabia--Medina3
- Schlüsselburg, Konrad, 1543-16191
- Science, Medieval3
- Scotland5