- Labor & Employment Consultants, East Hampton
- Laboratories Medical, East Hampton
- Lamp Repair, East Hampton
- Land Planning Services, East Hampton
- Land Surveyor, East Hampton - Land Surveying Services
- Land Use & Zoning Attorneys & Lawyers, East Hampton
- Landscape Contractors & Designers, East Hampton
- Landscape Lighting, East Hampton
- Landscaping, East Hampton
- Lawn & Garden Equipment & Supplies, East Hampton
- Lawn & Garden Services, East Hampton
- Lawn & Garden Sprinkler Systems, East Hampton
- Lawn Furnishings, East Hampton
- Lawn Maintenance Services, East Hampton
- Lawyers & Attorneys, East Hampton
- Legal & Tax Services, East Hampton
- Legal Information & Referral Services, East Hampton
- Legal Professionals, East Hampton
|
- Libraries, East Hampton
- Lighting Consultants & Designers, East Hampton
- Lighting Fixtures Repair, Maintenance & Installation, East Hampton
- Limousine Service, East Hampton
- Linens & Towels Manufacturers, East Hampton
- Lingerie & Underwear for Women, East Hampton - Bras, Panties, Bustiers, Corsets & More
- Liquor Stores, East Hampton
- Literary Agents, East Hampton
- Live Theaters, East Hampton
- Loans Personal, East Hampton
- Locks, East Hampton
- Locksmiths, East Hampton - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, East Hampton
- Lodging, East Hampton
- Long Haul Trucking Companies, East Hampton
- Lumber & Lumber Products, East Hampton
- Lumber & Lumber Products, East Hampton
|