- Prayers and devotions1
- Printed waste1
- 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
- Sacred vocal music1
- Sea fiction1
- Sea stories, Spanish1
- Sententiarum libri IV (Peter Lombard, Bishop of Paris)1
- Service books (Music)--Catholic Church1
- Silva, Juan de, Conde de Cifuentes1
- Silver mines and mining1
- Smelting1
- Spain--Belmonte1