- Laboratories Medical, Canastota
- Land Surveyor, Canastota - Land Surveying Services
- Landscape Contractors & Designers, Canastota
- Landscaping, Canastota
- Laundry Self Service, Canastota
- Lawn & Garden Services, Canastota
- Lawn Maintenance Services, Canastota
- Lawn Mower Repair & Blade Sharpening Service, Canastota
- Lawyers & Attorneys, Canastota
- Legal Professionals, Canastota
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- Libraries, Canastota
- Linen Supply Services, Canastota
- Liquor & Beer Manufacturers, Canastota
- Liquor Stores, Canastota
- Lodging, Canastota
- Long Haul Trucking Companies, Canastota
- Lumber & Lumber Products, Canastota
- Lumber Companies, Canastota - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Canastota
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