- Labor Organizations, Westwego
- Late Night Restaurants, Westwego
- Lawyers & Attorneys, Westwego
- Legal & Tax Services, Westwego
- Legal Professionals, Westwego
- Libraries, Westwego
- Lime & Limestone, Westwego
- Linen Supply Services, Westwego
- Liquid & Bulk Storage, Westwego
- Liquid Waste Treatment, Westwego
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- Loans Check Cashing, Westwego
- Loans Personal, Westwego
- Loans Title Services, Westwego
- Local & Short Haul Trucking Companies, Westwego
- Locks, Westwego
- Locksmiths, Westwego - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Westwego
- Lodging, Westwego
- Long Haul Trucking Companies, Westwego
- Lubricating Oils , Westwego - Motor Oil
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