- Architectural designer
- Art museum
- After school program
- Auditor
- Administrative attorney
- Arborist and tree surgeon
- Assisted living facility
- Auto upholsterer
- Auto parts market
- Animation studio
- Abbey
- Auto body parts supplier
- Adventure sports center
- Army & navy surplus shop
- Animal park
- Aerial photographer
- Agricultural cooperative
- Auto air conditioning service
- ATV repair shop
- Agricultural machinery manufacturer