- Labor Organizations, Annandale
- Labor Unions, Annandale
- Laboratories Dental, Annandale
- Laboratories Medical, Annandale
- Land Surveyor, Annandale - Land Surveying Services
- Landscape Contractors & Designers, Annandale
- Landscape Garden Services, Annandale
- Landscaping, Annandale
- Late Night Restaurants, Annandale
- Laundry Self Service, Annandale
- Lawn & Garden Equipment & Supplies, Annandale
- Lawn & Garden Services, Annandale
- Lawn Maintenance Services, Annandale
- Lawn Mowers & Power Equipment, Annandale
- Lawn Spraying & Treatment, Annandale
- Lawyers & Attorneys, Annandale
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- Legal & Tax Services, Annandale
- Legal Professionals, Annandale
- Libraries, Annandale
- Life Insurance, Annandale
- Lighting Consultants, Annandale
- Lighting Consultants & Designers, Annandale
- Lighting Contractors, Annandale
- Lighting Fixtures & Equipment, Annandale
- Limousine Service, Annandale
- Loans Personal, Annandale
- Locks, Annandale
- Locksmiths, Annandale - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Annandale
- Long Haul Trucking Companies, Annandale
- Lutheran Church, Annandale
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