Massachusetts - Area of significance: Architecture
| 1790 House |
| Abbot, Asa and Sylvester, House |
| Abbot-Baker House |
| Abbot-Battles House |
| Abbot, Benjamin, House |
| Abbot, Edwin, House |
| Abbot Hall |
| Abbot, J. T., House |
| Abbotsford |
| Abbot-Stinson House |
| Abbot Tavern |
| Abbott Street School |
| Aborn, John, House |
| Academie Brochu |
| Academy Building |
| Academy Hill Historic District |
| Academy Historic District |
| Ace Art Company |
| Acton Centre Historic District |
| Acton High School |
| Acushnet Heights Historic District |
| Adams, Abraham, House |
| Adams Academy |
| Adams, Amos, House |
| Adams Apartment Building |
| Adams, Benjamin, House |
| Adams Building |
| Adams, Charles-Woodbury Locke House |
| Adams-Clarke House |
| Adams-Crocker-Fish House |
| Adams, Frederic C., Public Library |
| Adams, John, School |
| Adams-Magoun House |
| Adams National Historic Site |
| Adams-Nervine Asylum |
| Adriatic Mills |
| ADVENTURE (schooner) |
| African Meetinghouse |
| Agawam Center Historic District |
| Agawan Diner |
| Agudas Achim Anshei Sfard Synagogue |
| Ahearn House and Summer House |
| Ahern, Catherine, Three-Decker |
| Albee, E., House |
| Albree-Hall-Lawrence House |
| Alden, Arthur, House |
| Alden-Delahanty Block |
| Alden, John and Priscilla, Family Sites |
| Alden, William E., House |
| Aldrich, Daniel, Cottage and Sawmill |
| Aldrich, J., House |
| Aldrich, Nathan C., House and Resthaven Chapel |
| Aldrich, S., House |
| Aldrich, W., House |
| Alexander, Arad, House |
| Alexander, Simeon, Jr. House |
| Algonquin Printing Co. |
| Allen, Abel, House |
| Allen, Charles, House |
| Allen, Elisha, House |
| Allen, Ethan, House and Gun Shop |
| Allen Hotel |
| Allen House |
| Allen, Nathaniel Topliff, Homestead |
| Allen, William Russell, House |
| All Saints' Church |
| All Souls Church |
| Allston Congregational Church |
| Allyn House |
| Al Mac's Diner-Restaurant |
| Almont Apartments |
| Almshouse |
| Almshouse |
| Al's Diner |
| Alvah Stone Mill |
| American Net and Twine Company Factory |
| American Optical Company Historic District |
| American Printing Co. and Metacomet Mill |
| American Waltham Watch Company Historic District |
| American Watch Tool Company |
| American Woolen Company Townhouses |
| Ames Building |
| 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 |
| Ammidown-Harding Farmhouse |
| Anawan Club Clubhouse and Caretaker's House |
| Anderson, Ludwig, Three-Decker |
| Andover National Bank |
| Andover Street Historic District |
| Andover Town Hall |
| Andover Village Industrial District |
| Andrews, Joseph, House |
| Angier, John B., House |
| Annisquam Harbor Light Station |
| Ann's Diner |
Data from United States Park Service and Wikidata
