| Croatian Social and Cultural Centre | Halton Hills |
| Holy Cross Roman Catholic Church | Georgetown |
| Holy Protection of the Blessed Virgin Mary Ukrainian Catholic Church (St. Mary's) | Burlington |
| Holy Rosary Catholic Church, Burlington | Burlington |
| Holy Rosary Church, Milton | Milton |
| Holy Trinity Croatian Catholic Parish | Oakville |
| Mary Mother of God Parish | Oakville |
| Paroisse Saint-Philippe, French Church Services | Burlington |
| Sacre-Coeur Church, Georgetown | Georgetown |
| St Andrew Catholic Church | Oakville |
| St Anthony of Padua Polish Roman Catholic Church | Oakville |
| St Benedict Church | Milton |
| St Dominic Roman Catholic Church | Oakville |
| St Gabriel Roman Catholic Church | Burlington |
| St James Roman Catholic Church | Oakville |
| St John the Baptist Roman Catholic Parish | Burlington |
| St Joseph Parish | Oakville |
| St Joseph Patron of Canada Roman Catholic Church, Acton - Church St E | Acton |
| St Joseph's Ukrainian Catholic Church | Oakville |
| St Matthew Roman Catholic Parish | Oakville |
| St Michael's Catholic Church | Oakville |
| St Patrick Roman Catholic Church | Burlington |
| St Paul the Apostle Roman Catholic Church | Burlington |
| St Raphael Roman Catholic Church | Burlington |
