- Accident
- Accokeek
- Adelphi
- Algonquin
- Annapolis
- Arbutus
- Arden on the Severn
- Allegany Grove
- Amcelle
- Amcelle Acres
- Academy Junction
- Acresville
- Admiral Heights
- Admirals Walk
- Alberta Heights
- Allenville
- Alloway
- Allwood
- Almar Estates
- Altoona Beach
- Amberfield
- Amberly
- Anchorage
- Andersons Corner
- Andorick Acres
- Annapolis Cove
- Annapolis Landing
- Annapolis Roads
- Aquahart Manor
- Arbordale