| Byrnes, Jim | Arlington Committee on Tourism & Economic Development | | | |
| Byrne, Michael | Master Plan Implementation Committee | Boards & Commissions | | |
| Butt, Linda | Sustainable Transportation, PAC | | | |
| Burden, Eliza | Tree Committee, 12/2025 | Boards & Commissions, Town Manager | | |
| Bryant, Kevin | Human Rights Commission, 2024 | Boards & Commissions, Town Manager | | |
| Brunel, Todd | Arlington Cultural Council, 1/31/2024 | Town Manager | | |
| Brownstein, Michael | Civilian Police Advisory Board Study Committee, Envision Arlington Standing Committee | | | |
| Brown , Anne | Civilian Police Advisory Board Study Committee, Council on Aging | | | |
| Brown, Anne | Council on Aging, 2024 | | | |
| Broaddus, Vaden | Capital Planning Committee, Secretary | | | |
| Breslow, Marc | Clean Energy Future | | | |
| Brazile (D), Juli | Board of Registrars, Chair | Clerk | | |
| Brazile, Juliana | Election Modernization Committee, Town Clerk | | | jbrazile@town.arlington.ma.us |
| Brazile, Juli | Envision Arlington Standing Committee | | | |
| Bradley, Tara | Finance Committee, Executive Secretary | | | |
| Bradford, Angelique | Master Plan Update Advisory Committee | Town Manager | | |
| Boyd, Tristan | Master Plan Update Advisory Committee | Town Manager | | |
| Bowes, Robert | Semiquincentennial Committee, At-large, Select Board | | | |
| Bowes, Bob | Arlington Committee on Tourism & Economic Development, Chamber of Commerce | Boards & Commissions, Town Manager | | |
| Bowes, Bob | Municipal Vulnerability Preparedness, Citizen | | | |
