- Labor & Employment Consultants, Colleyville
- Land Planning Services, Colleyville
- Land Surveyor, Colleyville - Land Surveying Services
- Landscape Contractors & Designers, Colleyville
- Landscaping, Colleyville
- Lawn & Garden Equipment & Supplies, Colleyville
- Lawn & Garden Services, Colleyville
- Lawn & Garden Sprinkler Systems, Colleyville
- Lawn & Garden Supplies & Equipment, Colleyville
- Lawn Maintenance Services, Colleyville
- Lawn Mowers & Power Equipment, Colleyville
- Lawyers & Attorneys, Colleyville
- Legal Professionals, Colleyville
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- Licensed Counselors, Colleyville
- Life Insurance, Colleyville
- Lighting Fixtures & Equipment, Colleyville
- Liquor Stores, Colleyville
- Livestock, Colleyville
- Loans Personal, Colleyville
- Locks, Colleyville
- Locksmiths, Colleyville - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Colleyville
- Long Haul Trucking Companies, Colleyville
- Luggage & Accessories , Colleyville
- Lutheran Church, Colleyville
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