- ✠ Saint Tarachus, and Companions, Martyrs
- ✠ Saint Tarasius, Patriarch of Constantinople
- ✠ Sts. Tarsilla and Emiliana, Virgins
- ✠ Saint Telesphorus, Pope, and Martyr
- ✠ Saint Teresa of Avila, Virgin, Reformer of the Carmelite Order
- ✠ Saint Thecla, First Virgin Martyr
- ✠ Saint Theodore Tyro, Martyr in Asia Minor
- ✠ Saint Theodoret, Martyr
- ✠ Saint Theodosius, Abbot
- ✠ Saint Theodulus, Priest and Martyr
- ✠ St. Thérèse of the Child Jesus, Carmelite
- ✠ Saint Thomas, Apostle and Martyr
- ✠ St. Thomas Aquinas, Dominican Priest, Doctor of the Church
- ✠ Saint Thomas Becket, Archbishop of Canterbury, Martyr
- ✠ St. Thomas More, Martyr
- ✠ St. Thomas of Villanova, Bishop of Valencia
- ✠ Saint Tiburtius, Martyr
- ✠ Saint Timothy, Bishop of Ephesus and Martyr
- ✠ Saint Titus, Bishop
- ✠ Transfiguration, of Our Lord
- ✠ Saint Turribius, Archbishop of Lima
