| :30 Seconds Over Tokyo | Group | | United States | | Boston, Massachusetts, United States | | | |
| (T-T)b | Group | | Boston, Massachusetts, United States | 2015 | Boston, Massachusetts, United States | | | 4 |
| 1-4-5's | Group | | United States | | Boston, Massachusetts, United States | | | |
| 2dip | Person | Male | Boston, Massachusetts, United States | 1993-10-12 | Boston, Massachusetts, United States | | | |
| 2Eaze | Person | Male | | 1991-01-15 | Boston, Massachusetts, United States | | | |
| 2NATURAL | Person | | Boston, Massachusetts, United States | | | | | |
| 4 Minute Warning | Group | | Boston, Massachusetts, United States | | Boston, Massachusetts, United States | | | |
| The 5: P.M. | Group | | United States | | Boston, Massachusetts, United States | | | |
| 5ALVO | Person | Male | Boston, Massachusetts, United States | | | | | |
| 5ever | Group | | Boston, Massachusetts, United States | | | | | |
| 5ive | Group | | United States | 2000 | Boston, Massachusetts, United States | | | 5 |
| 6L6 | Group | | Boston, Massachusetts, United States | | Boston, Massachusetts, United States | | | |
| 6ORN | Person | Male | Boston, Massachusetts, United States | | | | | |
| 7 Birches | Group | | Boston, Massachusetts, United States | | | | | |
| The 8 Balls | Group | | Boston, Massachusetts, United States | | | [unknown] | | |
| Late 9 | Group | | Boston, Massachusetts, United States | 2019 | Haverhill, Massachusetts, United States | | | |
| 10 Ft. Ganja Plant | Group | | United States | 1999 | Boston, Massachusetts, United States | | | |
| 29.9 | Group | | United States | 1969 | Wellesley, Massachusetts, United States | 1970 | Boston, Massachusetts, United States | |
| 40 Million Feet | Group | | | 2017-10 | Boston, Massachusetts, United States | | | |
| Please 2003 | Group | | Boston, Massachusetts, United States | 2022 | Boston, Massachusetts, United States | | | |
| A Year in Black & White | Group | | United States | 2025 | Boston, Massachusetts, United States | | | |
| Aaron and the Lord | Group | | Boston, Massachusetts, United States | 2020 | Boston, Massachusetts, United States | | | |
| AASH | Person | Female | United States | 1993-12-03 | Boston, Massachusetts, United States | | | |
| ABADABAD | Group | | Boston, Massachusetts, United States | | Allston, Boston, Massachusetts, United States | | | |
| Joey Abarta | Person | Male | Boston, Massachusetts, United States | | | | | |
| Abbot Jackson | Person | Male | Boston, Massachusetts, United States | | | | | |
| Tom Abbott | Person | Male | Boston, Massachusetts, United States | 1998-05-05 | | | | |
| Leo Abbott | Person | Male | United States | 1950-08-24 | Boston, Massachusetts, United States | | | |
| Amir Abdullah | Person | Male | United States | 1970-04-17 | Boston, Massachusetts, United States | | | |
| Aberdeen City | Group | | United States | 2001 | Brighton, Boston, Massachusetts, United States | | | 4 |
| Abomination | Group | | Boston, Massachusetts, United States | | | | | |
| Above Snakes | Group | | Boston, Massachusetts, United States | | | | | |
| Alex Abraham | Person | Male | Boston, Massachusetts, United States | | | | | |
| Joshua Abrams | Person | Male | United States | 1973 | Boston, Massachusetts, United States | | | 5 |
| Absently | Group | | United States | 2016 | Boston, Massachusetts, United States | | | |
| Absinthe Rose | Group | | Boston, Massachusetts, United States | 2008 | | | | |
| Absolve | Group | | United States | 2000 | Boston, Massachusetts, United States | 2004 | | |
| Abunai! | Group | | United States | 1996 | Boston, Massachusetts, United States | 2002 | | 5 |
| The Acro-brats | Group | | United States | | Boston, Massachusetts, United States | | | |
| Action Camp | Group | | United States | 2006 | Boston, Massachusetts, United States | | | |
| Action Verbs | Group | | Boston, Massachusetts, United States | 2007 | Boston, Massachusetts, United States | 2011 | Boston, Massachusetts, United States | |
| Actor|Observer | Group | | Boston, Massachusetts, United States | 2009 | Boston, Massachusetts, United States | | | |
| Ada Betsabe | Person | Female | Boston, Massachusetts, United States | 1991-01-29 | Dominican Republic | | | |
| Adamantis | Group | | Brighton, Boston, Massachusetts, United States | 2016 | Brighton, Boston, Massachusetts, United States | | | |
| DJ Addambombb | Person | | Boston, Massachusetts, United States | | | | | |
| Adeline Um | Person | Female | Boston, Massachusetts, United States | | | | | |
| Advent Varic | Group | | Boston, Massachusetts, United States | | | | | |
| Aerosmith | Group | | United States | 1970 | Boston, Massachusetts, United States | | | 4.15 |
| af love ttruck | Person | Male | Redding, Connecticut, United States | 2005-07-27 | Boston, Massachusetts, United States | | | |
| Michael Africk | Person | Male | United States | 1975-08-20 | Boston, Massachusetts, United States | | | |
| Afternoon Delights | Group | | Boston, Massachusetts, United States | | Boston, Massachusetts, United States | | | |
| AG | Person | Male | Boston, Massachusetts, United States | | | | | |
| Agnostic Fiddle Insurgency | Group | | Boston, Massachusetts, United States | 2012 | | | | |
| Laura Ahlbeck | Person | Female | Boston, Massachusetts, United States | 1957-09 | Columbus, Ohio, United States | 2015-06-11 | Newton, Massachusetts, United States | |
| Airacuda | | | Boston, Massachusetts, United States | 2012-08-12 | | 2016-06-03 | | |
| Airstrip 101 | | | Boston, Massachusetts, United States | | | | | |
| Akrobatik | Person | Male | United States | 1974-05-03 | Boston, Massachusetts, United States | | | 4.5 |
| Al B. Sure! | Person | Male | United States | 1968-06-04 | Boston, Massachusetts, United States | | | 4.5 |
| Al Vega | Person | Male | United States | 1921-06-22 | Worcester, Massachusetts, United States | 2011-12-02 | Boston, Massachusetts, United States | |
| Albion | Group | | United States | | Boston, Massachusetts, United States | | | |
| Louisa May Alcott | Person | Female | United States | 1832-11-29 | Philadelphia, Pennsylvania, United States | 1888-03-06 | Roxbury, Boston, Massachusetts, United States | |
| Alejandro Cimadoro Quintet | Group | | Boston, Massachusetts, United States | | | | | |
| Gerard Alessandrini | Person | Male | United States | 1953-11-27 | Boston, Massachusetts, United States | | | 2 |
| Alexander | Person | Male | United States | 1998-09-30 | Boston, Massachusetts, United States | | | 5 |
| Jane Alexander | Person | Female | United States | 1939-10-28 | Boston, Massachusetts, United States | | | |
| Roland Alexander | Person | Male | United States | 1935-09-25 | Boston, Massachusetts, United States | 2006-06-14 | | |
| Alias | Person | Male | Boston, Massachusetts, United States | | | | | |
| Samantha Alice | Person | Female | Rhode Island, United States | 2017 | Boston, Massachusetts, United States | | | |
| The Alien Blakk | Group | | United States | 2002 | Boston, Massachusetts, United States | | | |
| Alison's Thorn | Person | Other | Boston, Massachusetts, United States | | | | | |
| ALIXI | Person | | Boston, Massachusetts, United States | | | | | |
| Aliya Cycon Project | Group | | Boston, Massachusetts, United States | 2014-07-30 | Boston, Massachusetts, United States | | | |
| All About Buford | Group | | Boston, Massachusetts, United States | | | | | |
| All Mod Cons | Group | | Boston, Massachusetts, United States | 1989 | Boston, Massachusetts, United States | | | |
| All Pigs Must Die | Group | | United States | 2010 | Boston, Massachusetts, United States | | | |
| All the Queen’s Men | Group | | Boston, Massachusetts, United States | | | | | |
| Paul Hastings Allen | Person | Male | United States | 1883 | Boston, Massachusetts, United States | 1952 | Boston, Massachusetts, United States | |
| The Allstonians | Group | | United States | 1992 | Boston, Massachusetts, United States | | | |
| The Almighty RSO | Group | | United States | 1986 | Boston, Massachusetts, United States | 1998 | Boston, Massachusetts, United States | 5 |
| Aloud | Group | | United States | 2002-05-01 | Boston, Massachusetts, United States | | | 5 |
| Alternative Facts | Group | | Boston, Massachusetts, United States | | | | | |
| Amy Alvey | Person | Female | | | Boston, Massachusetts, United States | | | |
| Alys Turner | | Female | Boston, Massachusetts, United States | | | | | |
| Alisa Amador | Person | Female | Boston, Massachusetts, United States | | | | | |
| Amalgamated Cadaver | Group | | Boston, Massachusetts, United States | | | | | |
| Michael Ambroszewski | Person | | Boston, Massachusetts, United States | | | | | |
| American Authors | Group | | United States | 2006 | Boston, Massachusetts, United States | | | 4 |
| American Beauties | Group | | United States | | Boston, Massachusetts, United States | | | |
| American Hi‐Fi | Group | | United States | 1998 | Boston, Massachusetts, United States | | | 4 |
| American Ink | Group | | Boston, Massachusetts, United States | | | | | |
| American Nightmare | Group | | Boston, Massachusetts, United States | 1998 | Boston, Massachusetts, United States | | | 5 |
| American Sin | Group | | United States | 2016 | Boston, Massachusetts, United States | | | |
| American War Machine | Group | | United States | | Boston, Massachusetts, United States | | | |
| aminals | Group | | United States | 2008 | Boston, Massachusetts, United States | | | |
| Rae Amitay | Person | Non-binary | United States | | Boston, Massachusetts, United States | | | |
| Amoricans | Group | | Boston, Massachusetts, United States | 2018-01-01 | Boston, Massachusetts, United States | | | |
| Amy & the Engine | Group | | Boston, Massachusetts, United States | | | | | |
| Anadama | Group | | Boston, Massachusetts, United States | | | | | |
| Anarchy Club | Group | | United States | 2004 | Boston, Massachusetts, United States | | | |
| Anastasia Screamed | Group | | United States | 1987 | Boston, Massachusetts, United States | 1992 | United States | |