- Advanced Identification Inc
- Advanced Ob/Gyn Assoc
- Advantage Sport & Fitness
- Aeropostale
- Affordable Auto Svc
- Affordable Garage Door Repair
- Aflac
- Air Pro
- AJS Dental Assoc
- Alameda Park Pool
- Alan Smallwood Excavating
- Albert Gallatin Hm Health Care
- Aldi
- Alernative Concepts
- Alex Dallos Auto Sales & Svc
- Alexander Rockerfeller
- Alfredo J Garcia LTD
- All Pro Pools
- All Pro-Painting Co
- All Your Tree Needs
- Allcare LLC
- Allcovered Cleaning Svc
- Allegheny & Chesapeake Pt INC
- Allegheny East HCCU
- Allegheny Power
