- Tank & Pipe Working Industrial Equipment, Wallaceburg
- Tanning Salons, Wallaceburg
- Tax Return Preparation, Wallaceburg
- Taxi Cab Service, Wallaceburg
- Taxi Service, Wallaceburg
- Taxidermists, Wallaceburg - Taxidermy
- Terrazzo Tile Marble & Mosaic Contractors, Wallaceburg
- Testing Laboratories, Wallaceburg - Lab Tests
- Thrift Stores, Resale & Consignment Shops, Wallaceburg
- Tile Contractors - Install & Repair, Wallaceburg - Ceramic & Porcelain Tile Flooring - Kitchen & Bathroom
- Tire Retread, Regroove & Repair Equipment, Wallaceburg
- Tires - Wholesale & Retail, Wallaceburg
- Title & Surety Insurance, Wallaceburg
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- Tourist Attractions, Wallaceburg
- Tours & Guide Services, Wallaceburg
- Towing Service, Wallaceburg
- Trading Posts, Wallaceburg
- Transportation, Wallaceburg
- Transportation Equipment Manufacturers, Wallaceburg
- Transportation Facilities & Services, Wallaceburg
- Transportation Rental & Leasing, Wallaceburg
- Travel & Tourism, Wallaceburg
- Travel Arrangement & Services, Wallaceburg
- Truck Rental & Leasing, Wallaceburg - Rent a Truck & Tractor
- Truck Repair & Service, Wallaceburg
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