- Poverty--Religious aspects--Christianity1
- Printed waste1
- Real property1
- Registers (Lists)1
- Relations1
- Revolutions1
- Romances, Spanish1
- Rome (Empire)1
- Rueda family1
- Rueda, Baltasar de, active 1553-15691
- Rueda, Bernardino de, active 1553-15691
- Rueda, Luis de, active 1553-15691
- Rueda, Rodrigo de, active 1553-15691
- Rufina, Saint, -approximately 2871
- Rules1
- Sancho Garcés I, King of Navarre, -9251
- Sancho IV, King of Castile and Leon, 1257-12951
- Scores1
- Sententiarum libri IV (Peter Lombard, Bishop of Paris)1
- Sepúlveda, Juan Ginés de, 1490-15731