- Anthony's Pads Inc
- Anthony's Trattoria
- Antietam Academy
- Antietam Animal Hospital
- Antietam Arms Apartments
- Antietam Auto Sales
- Antietam Dental Medical Ctr
- Antietam Jr Sr High School
- Antietam Pump Co
- Antietam Roofing & Siding Co
- Antietam School District
- Antietam Valley Animal Hosp
- Antietam Valley Municipal Auth
- Antietam Valley Recreation Ctr
- Antietam Walk In-Bingo
- Apollo Pools Inc
- Apollo Pools Inc
- APS Skilled Trades
- Aqua Terra Environmental
- Arby's
