The title, Doctor, is given to specific saints who have great knowledge and understanding in theological teachings. Their writings are meaningful to the faithful in Christ for all ages of the Catholic Church and they contributed heavily to Christian teachings. These Saints, Doctors, are regarded to have been inspired by the Holy Spirit but they must not be considered infallible.

Additional Information On These Saints May Be Found On The Saints Page

Saint Albert the Great
Born-Died: 1206-1280
Title Date : December 16, 1931
Designated By: Pius XI

Saint Alphonsus Ligouri
Born-Died: 1696-1787
Title Date : July 7, 1871
Designated By: Pius IX

Saint Ambrose
Born-Died: 339-397
Title Date : September 20, 1295
Designated By: Boniface VIII

Saint Anselm
Born-Died: 1033-1109
Title Date : February 3, 1720
Designated By: Clement XI

Saint Anthony of Padua
Born-Died: 1195-1231
Title Date : January 16, 1946
Designated By: Pius XII

Saint Athanasius
Born-Died: 296-373
Title Date : 1568
Designated By: Pius V

Saint Augustine
Born-Died: 354-430
Title Date : September 20, 1295
Designated By: Boniface XIII

Saint Basil the Great
Born-Died: 329-379
Title Date : 1568
Designated By: Pius V

Saint Bede the Venerable
Born-Died: 672-735
Title Date : November 13, 1899
Designated By: Leo XIII

Saint Bernard of Clairvaux
Born-Died: 1090-1153
Title Date :  August 20, 1830
Designated By: Pius VIII

Saint Bonaventure
Born-Died: 1221-1274
Title Date : March 14, 1588
Designated By: Sixtus V

Saint Catherine of Siena
Born-Died: 1347-1380
Title Date : October 4, 1970
Designated By: Paul VI

Saint Cyril of Alexandria
Born-Died: 376-444
Title Date : July 28, 1882
Designated By: Leo XIII

Saint Cyril of Jerusalem
Born-Died: 315-386
Title Date : July 28, 1882
Designated By: Leo XIII

Saint Ephraem the Syrian
Born-Died: 306-373
Title Date : October 5, 1920
Designated By: Benedict XV

Saint Francis de Sales
Born-Died: 1567-1622
Title Date : November 16, 1871
Designated By: Pius IX

Saint Gregory of Nazianzus
Born-Died: 325-389
Title Date : 1568
Designated By: Pius V

Saint Gregory the Great
Born-Died: 540-604
Title Date : September 20, 1295
Designated By: Boniface XIII

Saint Hilary of Poitiers
Born-Died: 315-367
Title Date : May 13, 1851
Designated By: Pius IX

Saint Isidore of Seville
Born-Died: 560-636
Title Date : April 25, 1722
Designated By: Innocent XIII

Saint Jerome
Born-Died: 347-419
Title Date : September 20, 1295
Designated By: Boniface XIII

Saint John Chrysostom
Born-Died: 347-407
Title Date : 1568
Designated By: Pius V

Saint John of Damascus
Born-Died: 645-749
Title Date : August 19, 1890
Designated By: Leo XIII

Saint John of the Cross
Born-Died: 1542-1591
Title Date : August 24, 1926
Designated By: Pius XI

Saint Lawrence of Brindisi
Born-Died: 1559-1619
Title Date : March 19, 1959
Designated By: John XXIII

Saint Leo the Great
Born-Died: 400-461
Title Date : October 15, 1754
Designated By: Benedict XIV

Saint Peter Canisius
Born-Died: 1521-1597
Title Date : May 21, 1925
Designated By: Pius XI

Saint Peter Chrysologous
Born-Died: 400-450
Title Date : February 10, 1729
Designated By: Benedict XIII

Saint Peter Damian
Born-Died: 1007-1072
Title Date : September 27, 1828
Designated By: Leo XII

Saint Robert Bellarmine
Born-Died: 1542-1621
Title Date : September 17, 1931
Designated By: Pius XI

Saint Teresa of Avila
Born-Died: 1515-1582
Title Date : September 27, 1970
Designated By: Paul VI

Saint Thomas Aquinas
Born-Died: 1226-1274
Title Date : April 11, 1567
Designated By: Pius V

Saint Therese of Lisieux
Born-Died: 1873-1897
Title Date : October 19, 1997
Designated By: John Paul II