- Auto parts store
- Accounting school
- Auto insurance agency
- Auto tag agency
- Auto painting
- Auto electrical service
- Auto machine shop
- Amusement center
- Appliance repair service
- Automation company
- Air conditioning store
- Appliance parts supplier
- Aerial sports center
- Audio visual equipment supplier
- Asian household goods store
- Architectural salvage store
- Auto dent removal service
- Audiovisual equipment rental service
- Accounting software company
- Advertising service