- 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
- Sacraments--Catholic Church1
- Salt industry and trade--Law and legislation1
- San Miguel, Josefa de, active 1683-16851
- Sanchez de Bustamente, Luis1
- Sancho Garcés I, King of Navarre, -9251
- Sancho II, King of Castile and Leon, 1037 or 1038-10721
- Seals (Numismatics)1
- Silver mines and mining1
- Slavery1
- Smelting1
- Spain--Alpujarras1
- Spain--Archidona1
- Spain--Belmonte1
- Spain--Belorado1
- Spain--Burgos1