- Packaging Equipment & Machinery, South Houston
- Packaging, Shipping & Labeling Services, South Houston
- Paint & Painting Supplies, South Houston
- Paint Stores, South Houston
- Painters, South Houston - Painting Contractors
- Paralegals, South Houston
- Party Supplies Rentals, South Houston
- Passenger Ground Transportation, South Houston
- Passenger Vehicle Dealers, South Houston
- Paving Contractors - Driveway, Road, Walkway, South Houston - Installation, Repair & Seal - Asphalt & Concrete Pavers
- Pawn Shops, South Houston
- Perfume, Cologne & Fragrance Outlets, South Houston
- Personal Care, South Houston
- Personal Credit Institutions & Services, South Houston
- Personal Legal Services, South Houston
- Personal Service Consultants, South Houston
- Personal Services, South Houston
- Personal Watercraft Dealers, South Houston
- Personnel Consultants & Services, South Houston
- Pest Control Services, South Houston - Termite Control, Insects & Bed Bug Treatment - Pest Control Companies
- Pet & Domestic Animal Services, South Houston
- Pet Boarding & Grooming, South Houston - Dog & Cat Grooming & Services
- Pet Care Services, South Houston
- Pet Food & Supplies, South Houston
- Pet Grooming & Boarding Services, South Houston
- Pet Shops & Supplies, South Houston
- Pets Stores & Pet Supplies , South Houston
- Pharmacy & Drug Stores, South Houston - Drugstore - Chemists
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- Pipe Fitting Supplies, South Houston - Pipe Flange & Fittings
- Pipeline Contractors, South Houston - Oil, Water & Gas Pipeline Companies - Installation & Repair
- Pipes, South Houston
- Pizza Delivery Service, South Houston
- Pizza Restaurant 1 Of 2, South Houston
- Plastic Fabrication, South Houston
- Plastic Mold Manufacturers, South Houston
- Plastic Molds & Plastic Processing, South Houston
- Plastic Products, South Houston
- Plastic Products Manufacturers, South Houston
- Plumbers & Plumbing Contractors, South Houston - Installation, Repair & Replace Services
- Plumbing - Sewer & Drain Cleaning & Repair, South Houston
- Plumbing Fixtures, Equipment, Parts & Supplies, South Houston
- Prefabricated Homes & Buildings, South Houston - Prefab Homes - Structures
- Preschools, South Houston
- Printers Services, South Houston
- Processing & Packing Equipment, South Houston
- Product Rental & Leasing, South Houston
- Product Repair Services, South Houston
- Production Design Services, South Houston
- Professional, South Houston
- Professional Engineers, South Houston
- Professionals Equipment & Supplies, South Houston
- Property Management Companies, South Houston - Real Estate Management
- Publishing & Printing Manufacturers, South Houston
- Pumping & Drilling Contractors, South Houston
- Pumping Contractors, South Houston - Water Well, Concrete & Septic Tank Pumping
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