- Labor & Employment Consultants, Southborough
- Labor Organizations, Southborough
- Laboratories Dental, Southborough
- Laboratories Medical, Southborough
- Land Surveyor, Southborough - Land Surveying Services
- Landscape Contractors & Designers, Southborough
- Landscaping, Southborough
- Laser Hair Removal, Southborough
- Late Night Restaurants, Southborough
- Lawn & Garden Equipment & Supplies, Southborough
- Lawn & Garden Services, Southborough
- Lawn & Garden Sprinkler Systems, Southborough
|
- Lawn & Tree Service, Southborough
- Lawn Maintenance Services, Southborough
- Lawyers & Attorneys, Southborough
- Legal & Tax Services, Southborough
- Legal Clinics, Southborough
- Legal Professionals, Southborough
- Libraries, Southborough
- Life Insurance, Southborough
- Lighting Consultants & Designers, Southborough
- Limousine Service, Southborough
- Liquor Stores, Southborough
- Lodging, Southborough
|