Ajax
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- St. Francis de Sales Roman Catholic ChurchCatholic (Latin rite) · Church
- St. George's Anglican ChurchAnglican · Church
- St. Nedela Macedonian Orthodox ChurchOrthodox (Byzantine) · Church
- Ajax Alliance ChurchChurch
- Ajax Baptist ChurchBaptist · Church
- Apostolic Christian ChurchHouse of prayer
- Christian Life CentrePentecostal and Charismatic · Church
- Church of the Living GodChurch
- Faith Family ChurchHouse of prayer
- Faithway Baptist ChurchBaptist · Church
- Forest Brook Community ChurchChurch
- Kingdom Hall of Jehovah's WitnessesOther restorationist · House of prayer · 877 Westney Road South
- Marantha Christian FellowshipHouse of prayer
- Pickering Community Baptist ChurchBaptist · Church
- Pickering Pentecostal ChurchPentecostal and Charismatic · Church
- Pickering Village United ChurchChurch
- Rossland Ridge Bible ChapelHouse of prayer · 1 Stevensgate Drive
- Sanctus Church AjaxChurch · 599 Bayly Street East
- Southside Worship CentreChurch
- St. Andrew's Presbyterian ChurchReformed and Presbyterian · Church
- St. Bernadette's ChurchCatholic (Latin rite) · Church
- St. Isaac Jogues Catholic ChurchCatholic (Latin rite) · Church
- St. Mary & St. Abraam Coptic Orthodox ChurchOriental Orthodox · Church
- St. Paul's United ChurchChurch
- St. Timothy's Presbyterian ChurchReformed and Presbyterian · Church
- The Church of Jesus Christ of Latter-day SaintsOther restorationist · Church
- Westney Heights Baptist ChurchBaptist · Church