- Appliance store
- Anesthesiologist
- Antique furniture restoration service
- Art dealer
- Allergist
- Auto body shop
- Auto glass shop
- American restaurant
- Auto air conditioning service
- Auto parts market
- Airline ticket agency
- Artist
- Art supply store
- Aircraft supply store
- Airplane
- Archery range
- Athletic field
- Appliance repair service
- Aircraft maintenance company
- Architecture firm