Schr - Sido
- Schrader, Clement
- Schram, Dominic
- Schrank, Franz Paula von
- Schraudolph, Johann
- Schubert, Franz
- Schwane, Joseph
- Schwann, Theodor
- Schwanthaler, Ludwig von
- Schwarz, Berthold
- Schwarzburg
- Schwarzenberg, Friedrich, Prince of
- Schwenckfeldians
- Schwind, Moritz von
- Science and the Church
- Scillium
- Scillium (Titular See)
- Scillium, Martyrs of
- Scipione Gonzaga
- Scopia
- Scotism and Scotists