- A'Bella Stone LLP
- A-1 Motors Inc
- A-1 Rent All
- AAA
- AAA Cumberland Valley Tree
- AAA Insurance
- Aarons Sales & Lease Ownership
- AARP Tax Aide
- Abbott Door & Window
- ABCO
- Abe's Auto Svc
- Abom & Kutulakis LLP
- Above & Beyond
- Absolute Automotive
- Absolute Kneading Tyme Assoc
- Absolute Leigh
- Abundant Life Chapel
- Accents Baskets & Pottery
- Accents That Shine
- Ace Cash Express
