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- Simcoe Street United Church Church
- St. Hedwig Church Church · 411 Olive Avenue, Oshawa, Ontario, L1H 2P9.
- Assomption de Notre Dame Catholic (Latin rite) · Church
- Calvary Baptist Church Baptist · Church
- Calvary Baptist Church - 301 Campus Baptist · Church
- Carriage Country Baptist Church Baptist · Church
- Cedardale United Church Church
- Centennial Albert United Church Church
- Christ Church Anglican · Church
- Church of God of Prophecy Church
- College Park Church Adventist · Church · 1164 King Street East
- Community Baptist Church of Durham Baptist · Church
- Crosspoint Church Church
- Ebenezer United Church Church
- Eldad United Church Church
- Emmanuel Baptist Church Baptist · Church
- Evangel Pentecostal Church Pentecostal and Charismatic · Church
- First Baptist Church Baptist · Church
- First Church of Christ, Scientist, Oshawa Other restorationist · Church
- Gateway Community Church Church
- Grace Evangelical Lutheran Church Lutheran · Church
- Harmony Road Baptist Church Baptist · Church · 226 Harmony Road South
- Hellenic Orthodox Church Church · 399 Farewell Street
- Holy Cross Parish Catholic (Latin rite) · Church · Holy Cross Parish, 373 Simcoe St. S., Oshawa, Ontario, L1H 4J2
- Kedron United Church Church
- King Street Community Church Church
- Kingsview United Church Church · 505 Adelaide Avenue East
- Knox Presbyterian Church Reformed and Presbyterian · Church
- Life Point Church Church · 15 Harmony Road North
- New Apostolic Church Church
- New Life Seventh-day Adventist Church Adventist · Church
- Northminster United Church Church
- Ontario Conference of the Seventh-day Adventist Church Adventist · Church · 1110 King Street East
- Oshawa Community Church Church
- Oshawa Kingdom Hall of Jehovah's Witnesses Other restorationist · House of prayer · 1950 Wilson Road North
- Pine Ridge Bible Chapel Church
- Protection of the Mother of God Catholic Church Catholic (Latin rite) · Church
- Ritson Road Alliance Church Church · 605 Ritson Road North
- Seventh-Day Adventist Church in Canada National Headquarters Adventist · Church · 1148 King Street East
- Slavic Baptist Church Baptist · Church · 521 Bloor Street East
- St. George's Anglican Church Anglican · Church
- St. George Ukrainian Catholic Church Catholic (Latin rite) · Church
- St. Gertrude's Catholic Church Catholic (Latin rite) · Church · 690 King Street East
- St. Gregory the Great Roman Catholic Church Catholic (Latin rite) · Church
- St. Hedwig Catholic Church Catholic (Latin rite) · Church
- St. James' Presbyterian Church Reformed and Presbyterian · Church
- St. John the Baptist Ukrainian Orthodox Church Orthodox (Byzantine) · Church
- St. Joseph the Worker Parish Catholic (Latin rite) · Church
- St. Luke's Presbyterian Church Reformed and Presbyterian · Church
- St. Mary of the People Catholic Church Catholic (Latin rite) · Church
- St. Matthew's Anglican Church Anglican · Church
- St. Paul's Presbyterian Church Church · 32 Wilson Road North
- St. Peter's Anglican Church Anglican · Church · 258 Thomas Street
- St. Philip the Apostle Catholic Church Catholic (Latin rite) · Church
- St. Stephen's United Church Church
- St. Therese of Liseux Roman Catholic Church Catholic (Latin rite) · Church
- The Embassy of the Kingdom of God Pentecostal and Charismatic · Church · 416 Taunton Road West
- The Fellowship Christian Church Church · 2878 Trulls Road
- Trinity Church Pentecostal and Charismatic · Church · 900 King Street East
- Ukrainian Orthodox Church of the Nativity of St. Mary Orthodox (Byzantine) · Church
- Ukrainian Pentecostal Church Pentecostal and Charismatic · Church
- United Pentecostal Church Pentecostal and Charismatic · Church
- Zion Christian Reformed Church Reformed and Presbyterian · Church