| Toyota Motor Manufacturing | Toyota Automotibiles | 3361 - Automobile assembling | 2000 |
| Vuteq Canada Inc. | Modular components, package and trays | 3363 – Motor Vehicle Parts Manufacturing | 592 |
| ArcelorMittal Woodstock | Welded tubing and automotive parts | 3321 - Fabricated Metal Product Manufacturing | 339 |
| Toyota Boshoku Canada | Automotive seats, door panels, carpets & head liners | 3363 - Motor Vehicle Parts Manufacturing | 300 |
| Bright Cheese House | Cheeses, condiments | 3115 - Dairy products | 250 |
| Firestone Textiles Company | Tire cord fabrics, industrial yarns | 3149 - Other Textile Product Mills | 185 |
| SAF - Holland Canada Limited | Truck and trailor hitches, landing gear, couplers | 3363 - Motor Vehicle Parts Manufacturing | 165 |
| TRW Automotive | Automotive brake drums, brake rotors, wheel hubs | 3363 - Motor Vehicle Parts Manufacturing | 143 |
| Transfreight Integrated Logistics | Logistics for Toyota Motor Manufacturing | 4931 - Warehousing and Storage | 138 |
| Woodstock Stampings | Metal stampings, welded sub-assemblies | 3321 - Fabricated Metal Product Manufacturing | 132 |