- Labor & Employment Consultants, Powell
- Laboratories Biochemical, Powell
- Laboratories Dental, Powell
- Laboratories Medical, Powell
- Land Surveyor, Powell - Land Surveying Services
- Landscape Contractors & Designers, Powell
- Landscape Design & Installation, Powell
- Landscape Garden Services, Powell
- Landscaping, Powell
- Landscaping Materials & Supplies, Powell
- Language Schools, Powell
- Lapidary Supplies & Equipment, Powell
- Late Night Restaurants, Powell
- Lawn & Garden Equipment & Supplies, Powell
- Lawn & Garden Services, Powell
- Lawn & Garden Sprinkler Systems, Powell
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- Lawn Mowers & Power Equipment, Powell
- Lawyers & Attorneys, Powell
- Leather Goods Cleaners & Dyers, Powell
- Legal & Tax Services, Powell
- Legal Professionals, Powell
- Library Furniture, Powell
- License Services, Powell
- Life Insurance, Powell
- Liquor Stores, Powell
- Loans Personal, Powell
- Locks, Powell
- Locksmiths, Powell - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Powell
- Lodging, Powell
- Long Haul Trucking Companies, Powell
- Lutheran Church, Powell
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