- PIA Truck
- PIA Truck Driving
- PIA Truck Driving
- Pittsburgh Air Radio
- Pittsburgh Inst-Aeronautics
- Pittsburgh Inst-Aeronautics
- Pizza Co
- Pizza Perfecto
- Pnc Bank
- Pool City
- Power Quality Systems Inc
- Precision Response Corp
- Primary Care Ctr
- Priority First Real Estate Svc
- Prism Health Svc
- Products Unlimited Corp
- Professional Turf
