| Saint | Background | Date | Feast Day |
| Jacob | of Episkope | (Orth) 21/03 | |
| Jacob of Kostur + Jacob the Deacon + Dionysios the Monk | d1520 | (Orth) 01/11 | |
| Jacob/James | Bishop of Nisibis/Nisisbius | C4th | 15/07 11/07 |
| Jacob | the Presbyter | (Orth) 10/04 | |
| Jacques Fremin | Jesuit missionary in Canada | 1628-1691 | 02/07 |
| Jacutus | 05/07 | ||
| Jambert | Archbishop of Canterbury | 12/08 | |
| James | 13/07 | ||
| James | 19/11 | ||
| James Bird | 25/03 | ||
| James Duckett | 19/04 | ||
| James Fenn, John Nutter, George Haydock, John Mundyn, Thomas Hemerford | 12/02 | ||
| James Grissinger | b1407 | 11/10 | |
| James Intercisus | Persian martyr | 27/11 | |
| James | of Scavonia | 20/04 | |
| James (Gangala) | of the Marches/ Lamarca, Ancona | C15th | 28/11 |
| James | of York | 17/08 | |
| James Salomonelli | b1231 | 05/06 | |
| James | the Almsgiver | 28/01 | |
| James the Great(er) | Apostle | d AD 44 | 25/07 (24/07, Orth 30/04) |
| James the Less(er) | Apostle & 1st Bishop of Jerusalem | dAD62 | 03/05 22/06 01/05 |
| James | Bishop of Tarentaise | 16/01 | |
| James, Marian + comps | 30/04 | ||
| Jane | 09/07, 12/05 29/03 30/03 | ||
| Jane/Jeanne/Joan Frances de Chantal | Charitable widow, Visitation foundress | 1572-1641 | 21/08 12/12 18/08 |
| Jane | of Bagno | 16/01 | |
| Januarius/Gennaro + comps | Bishop of Benevento | d c305 | 19/10 |
| Januarius/Gennaro | Naples | d c305 | 13/09 |
| Jarlath/Iarflaith | Bishop of Tuam (& Armagh) | c550 | 26/12 06/06 (01/02) |
| Jason | Biblical Bishop of Tarsus | C1st | 12/07 |
| Jason, Sosipater/Sosipatros + comps | 25/06 (Orth 29/04) | ||
| Jean Brebeuf | Killed by Iroquois (Jesuit Martyr of North America) | 1593-1649 | 19/10 |
| Jeremiah | Biblical | 01/05 | |
| Jeremy | One of Five Egyptian Martyrs, martyred in Caesarea | d309 | 16/02 |
| Jeremy Taylor | Bishop of Down Connor and Dromore | c1667 | 13/08 |
| Jerome | 11/12 | ||
| Jerome Aemeliani/Emiliani | charitable priest, founder, 'Clerks Regular of Somascha' | 1481-1537 | 08/02 (20/07) |
| Jerome/Geronimus (Eusebius Hieronymus Sophronius) | Doctor of the Church | c341-420 | 30/09 |
| Jessica/Joanna | Biblical, follower of Jesus | C1st | 24/05 |
| Joachim | 09/12, 10/12 | ||
| Joachim | 16/09 | ||
| Joachim | 20/03 | ||
| Joachim | Father of virgin Mary | 26/07 (27/07) | |
| Joachim/Ioakeim | of Osogovo | d1105 | 16/08 |
| Joachim/Ioakeim I | Patriarch of Trnovo | d1246 | (Orth) 18/01 |
| Joan | 23/07 | ||
| Joan Antidea Thouret | 31/07 24/08 25/08 | ||
| Joan de Lestonnac | foundress, Notre Dame of Bordeaux | b1556 | 02/02 |
| Joan of Arc/Jeanne d'Arc | Maid of Orleans | 1412-1431 | 30/05 |
| Joan/Jane of Valois | 1st wife of Louis XII of France, later nun at Bourges | 1461-1505 | 04/02 |
| Joan/Jane Soderini | 01/09 | ||
| Joannicius | the Great | 04/11 | |
| Joavan | 02/03 | ||
| Job | Old Testament | 10/05 | |
| Jodocus/Judoc/Judocus/ Josse/Joost/Joyce | Ruler of Brittany, priest and hermit Amiens & Ponthieu | d669 | 13/12 15/12 10/06 (Trans 26/07, Trans to Winchester 09/01) |
| Joel | Biblical | 13/07 | |
| John + Paul | 27/06 26/06 | ||
| John + Thomas Felton | Father + son, English martyrs | 08/08 | |
| John | 02/11 | ||
| John | 08/06 | ||
| John | 10/06 | ||
| John | 11/09 | ||
| John | 11/10 | ||
| John | 13/04, 14/04 | ||
| John | 16/12 | ||
| John | 30/10 | ||
| John + comps | Seven Sleepers of Ephesus, martyrs | d c250 | 27/07 |
| John | Abbot of Réome | 28/01 | |
| John Baptist(e) de Rossi | Capuchin priest | 1698-1764 | 23/05 |
| John Baptist/Jean Baptiste de la Salle | Founder, 'Institute of the Brothers of the Christian Schools' | 1651-1719 | 07/04 (15/05) |
| John Baptist Marie Vianney | 'Cure d'Ars' | d1859 | 06/08 04/08 |
| John Berchmans | of Brabant, Jesuit priest in Rome | C17th | 12/08 13/08 26/11 |
| John | Bishop of Holar | 23/04 (Trans 03/03) | |
| John/Giovanni Bosco | Founder of Salesian order, Italy | 1815-88 | 31/01 |
| John Boste, George Swallowell + John Ingram | 24/07 | ||
| John Calybites | 15/01 | ||
| John Camillus Bonus | Bishop of Milan | 10/01 | |
| John Capistrano | of Capestran | 28/03 | |
| John Cassian(us) | 23/07 29/02 | ||
| John Chrysostom ('golden-mouthed') | Bishop of Constantinople | c344-407 | 27/1 13/11 13/09 |
| John Climacus | (of the Ladder) Syria | c570-650 | 30/03 |
| John Colombino/ Columbini | 31/07 | ||
| John Damascene/of Damascus | 'Doctor of Christian Art' | C8th | 04/12 (06/05 27/03) |
| John de Britto | Portugal | C17th | 04/02 |
| John de Prado | Martyr | 24/05 | |
| John de Ribera | 06/01 | ||
| John Elemosynarius/
John the Sage |
14/11 28/01 | ||
| John Eudes | Jesuit priest, France | 1601-70 | 19/08 |
| John Fisher, comp of St. Thomas More | of Beverley, Bishop of Rochester, beheaded by Henry VIII | 1459-1535 | 09/07 22/06 04/05 |
| John Forest | Martyr | 22/05 | |
| John Francis Regis | Jesuit confessor, France | 1597-1640 | 16/06 (31/12) |
| John Gabriel Perboyre | 07/11 | ||
| John Gualbert(o) | Order of Vallombrosa | c993-1073 | 12/07 (Trans 10/10) |
| John | Hermit | 19/03 | |
| John Hewitt, William Hartly + Robert Sutton | 05/10 | ||
| John I | Pope | d524 | 18/05 27/05 12/01 |
| John Joseph of the Cross | Franciscan in Naples | d1734 | 05/03 |
| John Kemble | 22/08 | ||
| John Leonardi | priest/founder, Lucca | 1541-1609 | 09/10 |
| John Marinoni | 13/12 | ||
| John Mark | 27/09 | ||
| John Neumann | of Bohemia, priest in New York | 1811-60 | 05/01 |
| John of Avila | 08/03 | ||
| John of Beverley | Bishop of Hexham & York | C8th | 07/05 (Trans 25/10) |
| John of Bridlington | 09/10 10/10 18/10 21/10 | ||
| John of Capestrano/ Capistrano | Franciscan crusader against Turks | 1385-1456 | 23/10 |
| John of Egypt | 27/03 | ||
| John of Ghent | 29/09 | ||
| John of God | worker for the poor, Portugal | 1495-1550 | 08/03 |
| John of Kanti (John de Kety) | Cantius, Poland | d1473 | 23/12 20/10 |
| John of Matha | Trinitarian founder | b1160 | 17/12 (08/02) |
| John of Montmirail | 29/09 | ||
| John of Moutier Chinon | 27/06 | ||
| John of Nicomedia | 07/09 | ||
| John of Rila | hermit, Bulgaria | c880-946 | 18/08 19/10, Orth 01/07, moving of relics Tarnovo to Rila, 1469 Rila to Sofia 980) |
| John of Ruysbroeck | Augustinian mystic, Belgium | 1293-1381 | |
| John of Sahagun (John Gonzales de Castrillo) | Augustinian friar, Spain | C15th | 12/06 |
| John of the Cross | Carmelite monk, Spain | 1542-91 | 14/12 24/11 |
| John of Trnov | d1822 | (Orth) 16/07 | |
| John of Warneton | Bishop of Thérouanne | 27/01 | |
| John Ogilvie | Jesuit martyr, Glasgow | 1569-1615 | 10/03 |
| John Payne | 02/04 | ||
| John Pius | Bishop of Arles | 12/11 | |
| John Roberts | English martyr, Tyburn | d1622 | 10/12 |
| John Roche, Blessed + Margaret Ward | martyrs of London | d1588 | |
| John Rochester, James Walworth + comps | 11/05 | ||
| John Sales + William Saultmouche | 06/02 | ||
| John Sarcander | 10/03 | ||
| John Shirt | Martyr | 28/05 | |
| John Southworth | 28/06 | ||
| John Stone | Martyr | 12/05 | |
| John Storey | 01/06 | ||
| John the Almoner/ Almsgiver/Eleemon | Bishop of Alexandria | d c616/620 | 23/01 |
| John the Apostle/ Evangelist/Divine | 'Apostle of Charity' Died at Ephesus | d c100 | 06/05 Octave 03/01 Dedication of St. John Lateran Rome 09/11 27/12 |
| John the Baptist | Biblical, kinsman and baptizer of Jesus | C1st | (Conception 24/09, Vigil of Nativity 23/06, Nativity 24/06, Beheading 29/08, Invention of his head 11/03 + 24/02, Reception of his face 17/12, Octave 01/07) |
| John the Bulgarian | d1784 | (Orth) 05/03 | |
| John the Bulgarian/Raiko of Shumen | d802 (Orth) | 14/05 | |
| John the Dwarf | Egypt, desert of Skeet/Scete | C4th/5th | 15/09 |
| John the Iberian | 12/07 | ||
| John the Silent | Bishop | 13/05 | |
| John the Theologian | Apostle | 08/05 | |
| John Vladimir | Prince of the Bulgarians | d1015 | (Orth) 22/05 |
| John/Wolflin of Nepomuk/Nepomucen | Martyr | c1345-93 | 16/05 30/05 |
| Jonas | of Paris | 21/09 22/09 | |
| Jonas/Jonah Barachisius + comps | 29/03 | ||
| Jonius | 05/08 | ||
| Jordan, Blessed | of Pulsano | 05/09 | |
| Jordan/Gordanus/Giordanus, Blessed | of Saxony, 2nd Dominican Master-General | d1237 | 15/02 |
| Josaphat/John Kuncewicz) | Bishop of Vitebsk & Polotsk | c1584-1623 | 12/11 (14/11) |
| Jose M. Escriva, Blessed | 26/06 | ||
| Joseph + comps | 19/09 | ||
| Joseph | 11/11 | ||
| Joseph | 23/03 | ||
| Joseph | 29/04 | ||
| Joseph Abibos | 15/09 | ||
| Joseph Barsabas | 20/07 | ||
| Joseph Cafasso | Rector, Institute of St. Francis | d1860 | 23/06 |
| Joseph Calasanz/Calasanctius | d1648 | 25/09 25/08 27/08 | |
| Joseph de Veuster, Venerable | missionary in Hawaii | d1885 | 15/04 |
| Joseph of Arimathea | 17/03 29/03 | ||
| Joseph of Cottolengo | Founder of orders to care for poor, Italy | C19th | 30/04 |
| Joseph of Cupertino | Franciscan monk | 1603-63 | 18/09 |
| Joseph of Freising | 17/01 | ||
| Joseph of Leonissa | 04/02 | ||
| Joseph of Palestine | 22/07 | ||
| Joseph of Volokalamsk | 09/09 | ||
| Joseph | Opifex/the Worker
Husband of Mary |
C1st | 01/05
19/03 |
| Joseph/Giuseppe M. Tommasi | 01/01 | ||
| Josepha Rossello | 03/10 | ||
| Josephine | 23/10 | ||
| Joshua | Israelite leader, Bible | 01/09 | |
| Jovinianus | martyr Auxerre | 05/05 | |
| Jovinus | 03/10 | ||
| Jovinus | Abbot at Poitiers | 01/06 | |
| Joyce | 25/11 | ||
| Juan Diego, Blessed | Mexico (saw Our Lady of Guadalupe) | C19th | 09/12 |
| Jucundus | Comp of Nicasius of Rheims | 14/12 | |
| Jude the Apostle (Judas Thaddaeus) | Martyr in Armenia | 28/10 | |
| Judas Cyriacus/ Quiriacus/Cyricus/Cyr/Quiricus | patron of Ancona, Bishop of Jerusalem | d133 | 04/05 01/05 |
| Judith + Salome | 29/06 | ||
| Judith | 22/12 | ||
| Judith/Jutta | Kulmsee | d1260 | 05/05 |
| Julia | 07/10, 21/07 | ||
| Julia, Venissimus + Maximus | Martyrs at Lisbon | d302 | 01/10 |
| Julia/Julie Billiart | Sisters of Notre Dame de Namur | 1751-1816 | 08/04 |
| Julia | of Corsica | C5th | 22/05 |
| Julia | virgin martyr | 23/05 | |
| Julian + Basilissa | virgin martyrs | 09/01 | |
| Julian | 01/11, 06/07, 08/02, 09/12 | ||
| Julian | Abbot of Toledo | 08/03 | |
| Julian | Bishop of Le Mans | 26/01 27/01 28/01 (Trans 25/07) | |
| Julian Chronion + Besas | 27/02 | ||
| Julian Majali | 04/10 | ||
| Julian | Martyr | 13/02 | |
| Julian | of Ancyra | 13/09 | |
| Julian | of Cagliari | 07/01 | |
| Julian | of Cilicia/Antioch | 16/03 | |
| Julian | of Edessa | 09/06 | |
| Julian Sabas | the Elder | 17/01 18/10 | |
| Julian the Hospitaller | /the Poor, mythical | 12/02 (29/01) | |
| Julian | the Levite | 22/06 | |
| Julian(a), Blessed | of Norwich | c1343-1423 | 13/05 |
| Juliana | 07/02 | ||
| Juliana | of Collato | 01/09 | |
| Juliana | of Liege | 1191-1258 | 05/04 |
| Juliana | virgin martyr | C1st | 15/02 |
| Juliana/Gillian Falconieri | Servite foundress | 1270-1341fs | 19/06 |
| Julitta | 18/05 | ||
| Julitta | 30/07 | ||
| Julius + Julian | 23/10 31/01 | ||
| Julius | 03/07 | ||
| Julius, Aaron + comps | Caerleon | C4th | 01/07 |
| Julius I | Pope | d352 | 12/04 |
| Julius the Veteran | of Durostorum | 27/05 | |
| Junia | 13/08 | ||
| Junian | 16/10 | ||
| Junipero (Miguel Jose) Serra, Blessed | Franciscan missionary, California | 1713-84 | 01/07 |
| Jurmin | Prince of East Anglia | 23/02 | |
| Just | of Penzance | 12/08 | |
| Justin + Stateus | 18/07 | ||
| Justin | 07/08, 08/08 | ||
| Justin | 17/09 | ||
| Justin de Jacobis | missionary & bishop in Ethiopia | C19th | 31/07 |
| Justin Martyr (+ comps Chariton, Charites, Paeon + Liberianus) | Nablus + Rome | c100-65 | 01/06 (14/04) |
| Justin | of Chieti | 01/01 | |
| Justina | 30/11 | ||
| Justina of Antioch | Martyr, comp of Cyprian | C3rd | 26/09 |
| Justina of Padua | martyr | C4th | 07/10 |
| Justine/Justina/Justa + Rufina | Martyrs in Seville | C2nd/3rd | 19/07 (20/07) |
| Justinian | 16/07 | ||
| Justinian | 23/08 | ||
| Justinian | confessor to Dewi Ramsey Island Wales | C6th | 05/12 |
| Justinus | 04/08 | ||
| Justinus | 22/03 | ||
| Justus + Clement | 31/08 | ||
| Justus + Pastor | Boy martyrs, Alcala | d304 | 05/08 (Trans 26/02) |
| Justus, Arthemius + Honesta | 11/10 | ||
| Justus | Bishop of Lyon | 02/09 Transitus 14/10 | |
| Justus | Bishop of Rochester, Archbishop of Canterbury | d627 | 10/11 |
| Justus | 28/02, 14/07, 18/07, 03/08, 02/11, 21/11, 26/11 | ||
| Justus of Beauvais | child martyr | c278-87 | 18/10 |
| Juthwara | virgin martyr Cornwall | 28/11 | |
| Juthware | sister of Sidwell, Devon | 13/07 | |
| Juvenal(is) | martyr | 07/05, 03/05 | |
| Juventinus + Maximinus | 25/01 |
This collection of names was compiled by Kate Monk and is ©1997, Kate Monk.
Copies may be made for personal use only.