- Laboratories Medical, Oxon Hill
- Landscape Contractors & Designers, Oxon Hill
- Landscaping, Oxon Hill
- Laundry & Dry Cleaning Equipment & Supplies, Oxon Hill - Cleaners & Dryers Sales, Repair, Service & Leasing
- Laundry Equipment Rental & Leasing, Oxon Hill
- Laundry Self Service, Oxon Hill
- Lawn & Garden Equipment & Supplies, Oxon Hill
- Lawn & Garden Services, Oxon Hill
- Lawn Maintenance Services, Oxon Hill
- Lawn Mowers & Power Equipment, Oxon Hill
- Lawyers & Attorneys, Oxon Hill
- Leather Goods Stores & Dealers, Oxon Hill
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- Legal & Tax Services, Oxon Hill
- Legal Professionals, Oxon Hill
- Limousine Service, Oxon Hill
- Linens, Oxon Hill
- Liquor Stores, Oxon Hill
- Loans Personal, Oxon Hill
- Locks, Oxon Hill
- Locksmiths, Oxon Hill - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Oxon Hill
- Lodging, Oxon Hill
- Long Haul Trucking Companies, Oxon Hill
- Luggage & Accessories , Oxon Hill
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