- Specimens1
- Spiritual life--Catholic Church1
- Spiritual life--Christianity1
- Stirton, John, 1871-19441
- Sufism1
- Sundials1
- Switzerland1
- Tables1
- Tactics1
- Talkhīṣ Miftāḥ al-ʻulūm (Qazwīnī, Jalāl al-Dīn Muḥammad ibn ʻAbd al-Raḥmān)1
- Tavener, William, active 14501
- Taxation1
- Terminology1
- Theology1
- Theology, Doctrinal1
- Thirteenth century1
- Thomas, Apostle, Saint, active 1st century1
- Thyestes, King of Olympia and Mycenae (Mythological character)1
- Tiberius, Emperor of Rome, 42 B.C.-37 A.D.1
- Trinity1