- A-Link Printing & Promotions
- Aec Group
- Affordable Self Storage
- Ahead Hair Salon
- Air Science Consultants Inc
- AJM Home Mortgage Loans Inc
- Aladdin Self Storage
- Alert Pharmacy Svc Inc
- All Star Car Care
- Allegheny Ad Svc Inc
- Allegheny Construction Group
- Allegheny County Magisterial
- Allegheny South Veterinary Svc
