| Barr, Joseph | Master Plan Advisory Committee | Boards & Commissions, Town Manager | | |
| Barr, Joseph | Master Plan Implementation Committee | Boards & Commissions | | |
| Barry, Charles | Historic Districts Commission, At-Large, 6/2026 | Boards & Commissions, Town Manager | | |
| Bauer, Kristen | Human Rights Commission, 2024 | Boards & Commissions | | |
| Bayer, Paul | Information Technology Advisory Committee | Boards & Commissions, Town Manager | | |
| Beauchemin, Crystal | Human Rights Commission, 2025 | Boards & Commissions | | |
| Bedard, Kristin | Arlington Cultural Council, 10/30/2025 | Town Manager | | |
| Behrent, Rob | Facilities Director, Building Committee (PTBC) | | | |
| Bell, Margie | Zero Waste Arlington | Boards & Commissions, Town Manager | | |
| Bender, Kate | Equal Opportunity Advisory Committee | | | |
| Benson, Eugene | Redevelopment Board (1/31/2026) | | | EBenson@town.arlington.ma.us |
| Benson, Eugene | Master Plan Update Advisory Committee | Town Manager | | |
| Benyo, Julie | Utility Pole Working Group | Boards & Commissions, Town Manager | | |
| Betlyon (R) , Rebecca | Board of Registrars, 2025 | Boards & Commissions | | |
| Bilsky, Alex | East Arlington Livable Street Rep. | | | |
| Biondi, Jane | back up member | Town Manager | | |
| Bishop, Karen | Civilian Police Advisory Board Study Committee, Board of Youth Services | Town Manager | | |
| Bishop, Karen | Board of Youth Services | Boards & Commissions, Town Manager | | |
| Bliss, Peggy | Finance Committee (Prct. 16, 2026) | Boards & Commissions, Town Manager | | |
| Bloch, Justine | Board of Youth Services, Chair | Boards & Commissions | | |
