- A Tropical Touch
- A/X Armani Exchange Inc
- AAA Dish Agent
- AAA Mid-Atlantic
- Aames Home Loan
- Aaron A Sorkin DDS
- AARP Philadelphia Region
- Aarrow Wildlife Management Inc
- Abbott Laboratories
- Able-Astor Inc
- ABM
- Abortion Aid & Guidance Group
- Abrams Run Apartment
- Academic Designs Inc
- Academy Leadership
- Access It Group Inc
- Accountants On Call Of Phila
- Accounting Principals
- ACCU Staffing Svc
- Accuride
