- Laboratories Dental, Needham
- Laboratories Medical, Needham
- Lacrosse Equipment & Supplies, Needham
- Land Surveyor, Needham - Land Surveying Services
- Landscape Contractors & Designers, Needham
- Landscaping, Needham
- Landscaping Materials & Supplies, Needham
- Language Schools, Needham
- Late Night Restaurants, Needham
- Laundry Self Service, Needham
- Lawn & Garden Equipment & Supplies, Needham
- Lawn & Garden Services, Needham
- Lawn & Garden Sprinkler Systems, Needham
- Lawn Maintenance Services, Needham
- Lawyers & Attorneys, Needham
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- Legal & Tax Services, Needham
- Legal Professionals, Needham
- Life Insurance, Needham
- Lighting Consultants & Designers, Needham
- Liquor & Beer Manufacturers, Needham
- Liquor Stores, Needham
- Loans Personal, Needham
- Locks, Needham
- Locksmiths, Needham - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Needham
- Lodging, Needham
- Long Haul Trucking Companies, Needham
- Lumber & Lumber Products, Needham
- Lumber & Lumber Products, Needham
- Lutheran Church, Needham
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