- Labor Organizations, Shirley
- Laboratories Medical, Shirley
- Ladies Ready To Wear, Shirley
- Land Surveyor, Shirley - Land Surveying Services
- Landscape Contractors & Designers, Shirley
- Landscaping, Shirley
- Laundry Self Service, Shirley
- Lawn & Garden Equipment & Supplies, Shirley
- Lawn & Garden Sprinkler Systems, Shirley
- Lawyers & Attorneys, Shirley
- Legal & Tax Services, Shirley
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- Legal Professionals, Shirley
- Libraries, Shirley
- Limousine Service, Shirley
- Lingerie & Underwear for Women, Shirley - Bras, Panties, Bustiers, Corsets & More
- Liquor Stores, Shirley
- Local & Short Haul Trucking Companies, Shirley
- Locks, Shirley
- Locksmiths, Shirley - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Shirley
- Lodging, Shirley
- Long Haul Trucking Companies, Shirley
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