| Business | Phone |
| New Life Assembly 421 Oozloffsky St, Petrolia N0N 1R0 | (519) 882-1600 |
| First Baptist Church 418 Greenfield St, Petrolia N0N 1R0 | (519) 882-2480 |
| Petrolia Christian Fellowship 4521 Petrolia, Petrolia N0N 1R0 | (519) 882-3564 |
| St Andrew's Presbyterian 416 Queen St, Petrolia N0N 1R0 | (519) 882-2400 |
| St Paul's United Church 4169 Petrolia Line, Petrolia N0N 1R0 | (519) 882-1390 |
| Christ Church Anglican Oil St, Petrolia N0N 1R0 | (519) 882-1430 |