- Procedure (Law)1
- Property1
- Prophecies1
- Ramiro II, King of Leon, -9511
- Registers (Lists)1
- Relations1
- Requesens, Antonio de'1
- Requesens, Berengario de'1
- Requesens, Bernardo de'1
- Requesens, Giuseppe de'1
- Revolutions1
- Ribera, Teresa de1
- Roderick, King of the Visigoths, -711?1
- Romances, Spanish1
- 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