- Tactics1
- Tavener, William, active 14501
- Taxation1
- Testamentum (Francis, of Assisi, Saint)1
- The Great Western Schism (1378-1417)1
- Theodore, Bishop of Mopsuestia, approximately 350-428 or 4291
- Thomas, Aquinas, Saint, 1225?-12741
- Thyestes, King of Olympia and Mycenae (Mythological character)1
- Tiberius, Emperor of Rome, 42 B.C.-37 A.D.1
- Translations1
- Trinity1
- Trojan War1
- Turkey--Troy (Extinct city)1
- Twentieth century1
- Ulric, Saint, Bishop of Augsburg, 890-9731
- Universities and colleges1
- Universität Wien. Kollegium St. Nikolaus1
- Victor IV, Antipope, -11641
- Vincemala, Giovanni Giacomo1
- Virtues1