| Bishop (2002.04.27 – ...): |  Bishop Ronald Peter Fabbro, C.S.B. (75) |
| Cities (Ontario) | Churches (133)  |
| Strathroy |  All Saints (Parish)  |
| Windsor |  Assumption University (University) |
| Chatham | Blessed Sacrament (Parish) |
| Windsor |  Blessed Sacrament |
| London | Brescia University College (University) |
| London |  Christ the King University Parish (Parish, Chapel) |
| Windsor | Corpus Christi (Parish) |
| Lakeshore | Good Shepherd (Parish) |
| St. Thomas | Holy Angels (Parish) |
| London | Holy Cross (Parish) |
| Woodstock | Holy Cross (Polish) |
| London | Holy Family (Parish) |
| Wallaceburg | Holy Family (Parish) |
| Essex | Holy Name of Jesus (Parish) |
| St. Marys | Holy Name of Mary (Parish) |
| Windsor | Holy Name of Mary (Parish) Parish of the Assumption |
| Windsor | Holy Trinity (Parish) |
| Woodstock | Holy Trinity (Parish) |
| Stratford | Immaculate Conception (Parish) |
| Windsor | Immaculate Heart (Parish) |
| South Grand Bend | Immaculate Heart of Mary (Parish) |
| Pain Court | Immaculée-Conception et Saint-Philippe (Parish) (French) |
| London | King’s University College (University) Western University |
| London | Mary Immaculate (Parish) |
| Wallaceburg | Our Lady Help of Christians (Parish) |
| Watford | Our Lady Help of Christians (Parish) |
| London | Our Lady of Czestochowa (Parish) (Polish) |
| Windsor | Our Lady of Guadalupe (Parish) |
| La Salette | Our Lady of La Salette |
| Sarnia | Our Lady of Mercy (Parish) |
| Mount Carmel | Our Lady of Mount Carmel (Parish) |
| Windsor | Our Lady of Mount Carmel (Parish) |
| Windsor | Our Lady of Perpetual Help (Parish) |
| Aylmer | Our Lady of Sorrows (Parish) |
| Windsor |  Our Lady of the Assumption (Former Cathedral) |
| Windsor | Our Lady of the Atonement (Parish) |
| Wheatley | Our Lady of the Blessed Sacrament |
| London | Our Lady of the Holy Rosary (Vietnamese) |
| Merlin |  Our Lady of the Rosary (Shrine) Former Church of St. Patrick |
| Chatham | Our Lady of Victory (Polish) |
| Delhi | Our Lady Queen of Martyrs (Parish) |
| Exeter | Precious Blood (Parish) |
| Windsor | Precious Blood (Parish) |
| Sarnia | Queen of Peace |
| Ingersoll | Sacred Heart (Parish) |
| Langton | Sacred Heart (Parish) |
| LaSalle | Sacred Heart (Parish) |
| Parkhill | Sacred Heart (Parish) |
| Port Lambton | Sacred Heart (Parish) |
| Sarnia | Sacred Heart (Parish) |
| Wingham | Sacred Heart (Parish) |
| Chatham | St. Agnes (Parish) |
| Windsor | St. Alphonsus (Parish) |
| Brussels | St. Ambrose |
| London | St. Andrew Kim (Korean) |
| London | St. Andrew the Apostle (Parish) |
| Windsor | St. Angela Merici (Parish) |
| St. Thomas | St. Anne (Parish) |
| Tecumseh | St. Anne (Parish) |
| Harrow | St. Anthony of Padua (Parish) |
| Windsor | St. Anthony of Padua (Parish) (Hungarian) |
| Sarnia | St. Benedict (Parish) |
| Windsor | St. Benedict (Latin) |
| Waterford | St. Bernard of Clairvaux (Parish) |
| Zurich | St. Boniface (Parish) |
| Delhi | St. Casimir |
| Port Dover | St. Cecilia (Parish) |
| Glencoe | St. Charles Garnier (Parish) |
| Forest | St. Christopher (Parish) |
| McGregor | St. Clement (Parish) |
| Windsor | Sts. Cyril and Methodius (Parish) |
| London | St. Daniel Comboni |
| Windsor | St. Francis of Assisi (Parish) (Croatian) |
| Tilbury | St. Francis Xavier (Parish) |
| London | St. George (Parish) |
| Seaforth | St. James (Parish) |
| Windsor | Saint-Jerome (Parish) (French) |
| Kingsville | St. John de Brebeuf (Parish) |
| Amherstburg | St. John the Baptist (Parish) |
| London | St. John the Divine (Parish) |
| Woodslee | St. John the Evangelist (Parish) |
| Windsor | St. John Vianney (Parish) |
| Ashfield | St. Joseph |
| Chatham | St. Joseph (Parish) |
| Corunna | St. Joseph (Parish) |
| Leamington | St. Joseph |
| Listowel | St. Joseph (Parish) |
| River Canard | St. Joseph (Parish) |
| Sarnia | St. Joseph |
| Stratford | St. Joseph (Parish) |
| London | St. Josephine Bakhita |
| London | St. Justin (Parish) |
| Courtland |  St. Ladislaus (Hungarian) |
| London | St. Leopold Mandic (Parish) |
| London | Sainte-Marguerite d’Youville (French) |
| London | St. Martin of Tours (Parish) Parish of St. Francis of Assisi and St. Martin of Tours |
| Blenheim | St. Mary (Parish) |
| London | St. Mary (Parish) |
| Maidstone | St. Mary (Parish) |
| Simcoe | St. Mary |
| Tillsonburg | St. Mary (Parish) |
| West Lorne | St. Mary (Parish) |
| Bright’s Grove | St. Michael (Parish) |
| Dresden | St. Michael |
| Leamington | St. Michael (Parish) |
| London | St. Michael (Parish) |
| Ridgetown | St. Michael (Parish) |
| Windsor | St. Michael (Parish) (German) |
| Dublin | St. Patrick (Parish) |
| Kinkora | St. Patrick (Parish) |
| London | St. Patrick (Parish) |
| Lucan | St. Patrick (Parish) |
| LaSalle | St. Paul |
| Thamesville | St. Paul (Parish) |
| London |  St. Peter (Cathedral, Minor Basilica, Parish) |
| Goderich | St. Peter (Parish) |
| Tilbury East | St. Peter (Parish) |
| Zurich | St. Peter (Parish) |
| London |  St. Peter’s Seminary (Seminary) |
| Petrolia | St. Philip (Parish) |
| London | St. Philip Minh and St. Anne Thanh (Vietnamese) |
| Belle River | Sts. Simon and Jude (Parish) |
| London | St. Stephen of Hungary (Hungarian) |
| London | St. Stephen of Hungary (Hungarian) |
| Windsor | St. Theresa (Parish) |
| Sarnia | Saint-Thomas d’Aquin (Parish) (French) Church of St. Thomas Aquinas |
| Chatham | St. Ursula (Parish) |
| Mitchell | St. Vincent de Paul (Parish) |
| Windsor | St. Vincent de Paul |
| Emeryville | St. William |
| Windsor | St. Yu Jin-Gil (Korean) |
| Pelee Island | Star of the Sea |
| Comber | Visitation (Parish) |
| Cities | Other Churches Within the Diocesan Territory (15) |
| London |  Christ the King (Parish) (Ukrainian) |
| Woodstock | Holy Dormition (Ukrainian) Ukrainian Studite Fathers |
| Windsor | Holy Family (Chaldean) |
| Leamington | Our Lady of Lebanon (Shrine) (Maronite) Church of St. Anthony |
| Waterford | Sacred Heart (Parish) (Ukrainian) |
| Chatham | St. Anne’s Conception (Ukrainian) |
| Oldcastle | St. Charbel Monastery (Monastery) (Maronite) |
| London | St. Elias (Maronite) |
| Courtland | St. George (Hungarian) (Ukrainian) |
| Sarnia | St. George the Great Martyr (Parish) (Ukrainian) |
| London | St. Joseph (Chaldean) |
| Windsor | St. Michael (Slovak) (Ruthenian) |
| Windsor | St. Peter (Maronite) |
| Windsor | St. Simeon (Parish) (Greek-Melkite) |
| Windsor | Sts. Vladimir and Olga (Parish) (Ukrainian) |
Last updated on 2026.03.23
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