Industries List
| Name | Province | City | |
|---|---|---|---|
| Maplehurst North York - Wonder Brands Inc. | Ontario | North York | |
| Maplehurst Regina - Wonder Brands Inc. | Saskatchewan | Regina | |
| Marden-Wild - Marden-Wild of Canada | Nova Scotia | Amherst | |
| Marine Recycling Corporation - Marine Recycling Corporation | Ontario | Port Colborne | |
| Maritime House Metals Inc - Napanee Facility - Maritime House Metals ULC | Ontario | Napanee | |
| Maritime Hydraulic Repair Centre (1997)LTD - Maritime Hydraulic Repair Centre (1997) Ltd | New Brunswick | Moncton | |
| MARK PEMBINA 02-35-046-02W5 - Inplay Oil Corp. | Alberta | Mark Pembina | |
| Markerville Compressor Station #1 - HARVEST OPERATIONS CORP. | Alberta | Dickson | |
| Markham - Dynamix inc. | Ontario | Markham | |
| Markham BU - Creation Technologies Ltd. | Ontario | Markham |
