- Agape Christian Fellowship Chr
- AIM Management Group
- Airport Sedan Svc
- Aisha's Beauty Salon
- Al & Russ's Bar
- Albert Merranko
- Alchemist's Apprentice
- Alder Court Apartments Inc
- Alice Buchdahl MD
- All State Chimney
- Allegheny & Chesapeake Inc
- Allegheny & Chesapeake Pt INC
- Allegheny Child Care
- Allegheny General Hosp Prchsng
- Allegheny Home Care
- Allegheny Housing Rehab Corp
- Allegheny Intermediate Unit
- Allegheny Orthopedic Assoc
- Allegheny Psychological Svc
- Allegheny Reproductive Health
- Allegheny Womens Ctr
- Alleghenye Institute Inc
- Allegiance Staffing
- Allen Hodges MD
