- Labor & Employment Consultants, Weyburn
- Labor Organizations, Weyburn
- Laboratory Equipment Repair & Service, Weyburn
- Land Surveyor, Weyburn - Land Surveying Services
- Landscape Contractors & Designers, Weyburn
- Landscaping, Weyburn
- Laser Equipment Repair & Service, Weyburn
- Laundromats & Dry-Cleaning, Coin-Operated, Weyburn
- Lawn & Garden Equipment & Supplies, Weyburn
- Lawn & Garden Services, Weyburn
- Lawn Maintenance Services, Weyburn
- Lawn Mowers & Power Equipment, Weyburn
- Lawyers & Attorneys, Weyburn
- Legal Professionals, Weyburn
- Libraries, Weyburn
- License & Registry Services, Weyburn
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- Life Insurance, Weyburn
- Lighting Fixtures & Equipment, Weyburn
- Liquid Transportation - Non Hazardous, Weyburn
- Liquor Stores, Weyburn
- Livestock, Weyburn
- Livestock Dealers, Weyburn
- Loans Personal, Weyburn
- Locksmiths, Weyburn - Residence, Commercial, Safe & Auto Car Locksmith
- Lodging, Weyburn
- Lodging Services, Weyburn
- Long Haul Trucking Companies, Weyburn
- Lumber & Lumber Products, Weyburn
- Lumber & Lumber Products, Weyburn
- Lumber Companies, Weyburn - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Weyburn
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