| Mayer, Leslie | Community Preservation Act Committee, Park & Recreation Commission | Town Manager | | |
| Mahon, Diane M. | School Enrollment Task Force, Select Board | Town Manager | | DMahon@town.arlington.ma.us |
| Mann, Dana | Audit Advisory Committee, Acting Director of Assessors | Town Manager | | |
| Magee, Alex | Audit Advisory Committee, Deputy Town Manager | Town Manager | | |
| Mulroy, Stacey | Director, Recreation | Town Manager | | |
| Mongold, Neal | Affordable Housing Trust Fund Board | Town Manager | | |
| McMurray, Brian | Arlington Cultural Council, Co-Chair, 6/30/2024 | Town Manager | | |
| McBride, Brian | Community Preservation Act Committee, Conservation Commission | Town Manager | | |
| Muszynski, Mary | CDBG Subcommittee, CDBG Administrator | Town Manager | | |
| McNulty, Julie | Master Plan Update Advisory Committee | Town Manager | | |
| MacDonald (R), Ralph E. | Board of Registrars, 2026 | Town Manager | | |
| Martin, Anna | Prevention Services Manager | Health & Human Services | (781) 316-3193 | amartin@town.arlington.ma.us |
| Morgan, David | Environmental Planner/Conservation Agent | Conservation, Planning | (781) 316-3012 | dmorgan@town.arlington.ma.us |
| McBride, Brian | Conservation Commission, Associate | Conservation, Planning | | |
| Miano, Mark | Building Maintenance Comm | Boards & Commissions, Town Manager | | |
| Mullen, Scott | Zero Waste Arlington | Boards & Commissions, Town Manager | | |
| Melofchik, Beth | Historic Districts Commission, Broadway District, 6/2026 | Boards & Commissions, Town Manager | | |
| Mahon, Diane M. | Budget Revenue Task Group, Select Board | Boards & Commissions, Town Manager | | |
| Mason, Michael | Audit Advisory Committee, CFO Schools | Boards & Commissions, Town Manager | | |
| Makowka, Steve | Historic Districts Commission, Chair, 2024 | Boards & Commissions, Town Manager | | |
