- Labor & Employment Consultants, Stratford
- Labor Organizations, Stratford
- Laboratories Medical, Stratford
- Land Surveyor, Stratford - Land Surveying Services
- Landscape Contractors & Designers, Stratford
- Landscaping, Stratford
- Landscaping Materials & Supplies, Stratford
- Lawn & Garden Equipment & Supplies, Stratford
- Lawn & Garden Services, Stratford
- Lawn & Garden Sprinkler Systems, Stratford
- Lawn Maintenance Services, Stratford
- Lawn Mowers & Power Equipment, Stratford
- Lawyers & Attorneys, Stratford
- Legal & Tax Services, Stratford
- Legal Professionals, Stratford
- Libraries, Stratford
- License & Registry Services, Stratford
- Life Insurance, Stratford
- Lift Trucks, Stratford
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- Limousine Service, Stratford
- Liquor Stores, Stratford
- Live Theaters, Stratford
- Livestock, Stratford
- Livestock Breeders, Stratford
- Livestock Services, Stratford
- Loans Personal, Stratford
- Local & Short Haul Trucking Companies, Stratford
- Locks, Stratford
- Locksmiths, Stratford - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Stratford
- Lodging, Stratford
- Long Haul Trucking Companies, Stratford
- Luggage & Accessories , Stratford
- Luggage Wholesale, Stratford
- Lumber & Lumber Products, Stratford
- Lumber & Lumber Products, Stratford
- Lutheran Church, Stratford
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