- Laboratories Medical, Wallington
- Landscape Contractors & Designers, Wallington
- Landscaping, Wallington
- Laundry Self Service, Wallington
- Lawn & Garden Services, Wallington
- Lawn Maintenance Services, Wallington
- Lawyers & Attorneys, Wallington
- Lebanese Restaurants, Wallington
- Legal Professionals, Wallington
- Libraries, Wallington
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- Life Insurance, Wallington
- Limousine Service, Wallington
- Liquid & Bulk Storage, Wallington
- Liquor Stores, Wallington
- Loans Personal, Wallington
- Locks, Wallington
- Locksmiths, Wallington - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Wallington
- Long Haul Trucking Companies, Wallington
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