- Athletic track
- Assisted living facility
- Aromatherapy supply store
- Art supply store
- Aged care
- Auto electrical service
- Advertising agency
- Appliance parts supplier
- Asian grocery store
- Athletic club
- Appraiser
- Auditorium
- Agricultural service
- Architect
- Advertising service
- Adventure sports center
- Amusement center
- Administrative attorney
- Alternative medicine practitioner
- ATV dealer