- Spedale di Santa Maria Annunziata (San Miniato, Italy)1
- Spenser, Edmund, 1552?-15991
- Speziale, Giovanni1
- Sphaera mundi (Sacro Bosco, Joannes de)1
- Spinelli, Pietro1
- Spiritual life1
- Squillace, Sigismondo1
- State, The1
- Statesmen1
- Statutes1
- Stefani, Nicola1
- Strozzi, Giovanni1
- Stuart, House of1
- Suffering--Religious aspects1
- Sufi chants1
- Sufi literature, Persian1
- Sufi poetry, Persian1
- Sufism--Doctrines1
- Summa theologica (Thomas, Aquinas, Saint)1
- Suyūṭī, 1445-1505. Farīdah fī al-naḥw wa-al-taṣrīf wa-al-khaṭṭ1