- Tarquinius Superbus, Lucius, King of Rome, active 534 B.C.-510 B.C.1
- Tasʹhīl al-fawāʼid wa-takmīl al-maqāṣid (Ibn Mālik, Muḥammad ibn ʻAbd Allāh)1
- Tatars1
- Technology1
- Tefillin1
- Temple of Jerusalem (Jerusalem)1
- Ten commandments1
- Terence1
- Theodicy1
- Theological anthropology--Christianity1
- Theological virtues1
- Theology, Doctrinal--Catholic authors1
- Theoricae novae planetarum (Peurbach, Georg von)1
- Third Order Regular of St. Francis1
- Thomas, Aquinas, Saint, 1225?-12741
- Tibullus1
- Ties1
- Time measurements1
- Timekeeping1
- Timur, 1336-14051