- Rodríguez, Sebastián, 1896-19681
- Romances, Spanish1
- Ros Pelayre, Miguel1
- Rufina, Saint, -approximately 2871
- Sacraments--Catholic Church1
- Salt industry and trade--Law and legislation1
- Sancho Garcés I, King of Navarre, -9251
- Sancho IV, King of Castile and Leon, 1257-12951
- Seals (Numismatics)1
- Sepúlveda, Juan Ginés de, 1490-15731
- Silver clasp plates1
- Slavery1
- Societies1
- Spain--Andalusia1
- Spain--Aragon1
- Spain--Castilla y León1
- Spain--Ecija1
- Spain--Galicia (Region)1
- Spain--Logroño1
- Spain--Palencia1