- A-1 Mark's Bonding Svc
- A-1 Radon Specialists
- A-B-E Car Care Ctr
- AA Abcef
- AAA
- AAA East Pa
- AAA Tile & Marble
- AAAA Board Up Svc
- Aaron Healthcare Inc
- Aaron Resources Inc
- Abacus Funding
- Abe Carpet Cleaning Svc
- Abe's Wholesale
- Abin Industries
- Able Lock & Safe Co
- Able Roofing & Siding
- Acceptance Insurance Co
- Accurate Rehab & Fitness Inc
- Ace Electric Inc
- Ace Moving & Stge Corp
