Massachusetts - Significance region: Local
| Abbot, Benjamin, House |
| Abbot, Edwin, House |
| Abbotsford |
| Academie Brochu |
| Academy Historic District |
| Ace Art Company |
| Acton Centre Historic District |
| Acton High School |
| Acushnet Heights Historic District |
| Adams Apartment Building |
| Adams Building |
| Adams, Charles-Woodbury Locke House |
| Adams, Frederic C., Public Library |
| Adams, John, School |
| Adams-Magoun House |
| Agawam Center Historic District |
| Agudas Achim Anshei Sfard Synagogue |
| Ahearn House and Summer House |
| Ahern, Catherine, Three-Decker |
| Albree-Hall-Lawrence House |
| Alden, Arthur, House |
| Alden-Delahanty Block |
| Alden, William E., House |
| Alexander, Simeon, Jr. House |
| Allen, Abel, House |
| Allen, Elisha, House |
| Allen, Ethan, House and Gun Shop |
| Allen Hotel |
| Allen House |
| Allen, Nathaniel Topliff, Homestead |
| Allen, William Russell, House |
| All Souls Church |
| Allston Congregational Church |
| Allyn House |
| Almont Apartments |
| Almshouse |
| Al's Diner |
| Alvah Stone Mill |
| American Waltham Watch Company Historic District |
| American Watch Tool Company |
| American Woolen Company Townhouses |
| American Woolen Mill Housing District |
| Amesbury and Salisbury Mills Village Historic District |
| Amesbury Friends Meeting House |
| Ames Hill/Crescent Hill District |
| Ames, Josiah A., House |
| Ames Manufacturing Company |
| Ames Schoolhouse |
| Amherst Central Business District |
| Amherst West Cemetery |
| Ammidown-Harding Farmhouse |
| Anawan Club Clubhouse and Caretaker's House |
| Anawan Rock |
| Anderson, Ludwig, Three-Decker |
| Andover Street Historic District |
| Andrews, Joseph, House |
| Anthony, David M., House |
| Anthony, Harold H., House |
| Anthony House |
| Apponegansett Meeting House |
| Apremont Triangle Historic District |
| Aptucxet Trading Post Museum Historic District |
| Arcade, The |
| Arlington-Basswood Historic District |
| Arlington Coal & Lumber |
| Arlington Gaslight Company |
| Arlington Pumping Station |
| Arlington Reservoir |
| Arlington Street Church |
| Armory Block |
| Armstrong House |
| Arnold Print Works |
| Ascension-Caproni Historic District |
| Ashburnham Center Historic District |
| Ashfield Plain Historic District |
| Ashland Mill Tenement |
| Ashland Town House |
| Ashworth Brothers Mill |
| Assington |
| Assonet Historic District |
| Athol High School |
| Attleboro Jewelry Industry Historic District |
| Attleborough Falls Gasholder Building |
| Attleborough Falls Historic District |
| Atwood, Charles R., House |
| Atwood, Ephraim, House |
| Aurora Hotel |
| Austin, Francis B., House |
| Avant House |
| Avon Hill Historic District |
| Ayer, Albert, House |
| Ayer Main Street Historic District |
| Ayer, Thomas, House |
| Babson-Alling House |
| Bacon, Clifton, House |
| Bacon-Gleason-Blodgett Homestead |
| Bacon-Morse Historic District |
| Bacon, Robert, House |
| Bainbridge, Randolph, House |
| Baker, Benjamin, Jr., House |
Data from United States Park Service and Wikidata
