- Laboratories Dental, Tujunga
- Laboratories Medical, Tujunga
- Laboratories Pharmaceutical, Tujunga
- Landscape Contractors & Designers, Tujunga
- Landscaping, Tujunga
- Late Night Restaurants, Tujunga
- Lawyers & Attorneys, Tujunga
- Legal & Tax Services, Tujunga
- Legal Professionals, Tujunga
- Life Insurance, Tujunga
- Liquor Stores, Tujunga
- Local & Short Haul Trucking Companies, Tujunga
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- Locks, Tujunga
- Locksmiths, Tujunga - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Tujunga
- Lodging, Tujunga
- Lodging Services, Tujunga
- Long Haul Trucking Companies, Tujunga
- Lumber & Lumber Products, Tujunga
- Lumber & Lumber Products, Tujunga
- Lumber & Wood Products Manufacturers, Tujunga
- Lumber Companies, Tujunga - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Tujunga
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