- Abbot Village
- Abbott Island
- Abbotts Mill
- Acadia
- Acton
- Adaline
- Adams
- Adams Corner
- Addison
- Admiralty Village
- Agamenticus Station
- Agamenticus Village
- Airport Village
- Albion
- Alewife
- Alexander
- Alfred
- Alfred Mills
- Allagash
- Allen Island
- Allens Mills
- Alley Island
- Alley Island
- Alna
- Alna Center
- Alton
- Alum Rock
- Amherst
- Andover
- Andover