- Aspiring Champions Inc
- Asset Management
- Asset Management Industries
- Associates In Rehabilitation
- Astera Film & Video Inc
- Aston Business Solutions
- Astra Zeneca
- At The Home Health Care Svc
- Atelier Design
- Athlete's Foot
- Atkinson Freight
- Atlantic Medical Specailites
- Atlantic Paper
- Atlas Chiropractic & Rehab
- Atr Inc
- Attachmate WRQ
- Attachmate WRQ
- Attilio Plumbing & Heating
- ATX Communications Inc
- Audio Jam Inc
- Audio Video Assoc
- Audio Visual Communications
