| Mullen, Scott | Zero Waste Arlington | Boards & Commissions, Town Manager | | |
| Morgan, Jane P. | Vice Chair, School Committee, 2027 | Boards & Commissions, Town Manager | (781) 777-2776 | jmorgan@arlington.k12.ma.us |
| Maxtutuis, Jeff | Transportation Advisory Committee Rep. | | | |
| Moore, Christopher | Town Meeting Procedures Committee | Boards & Commissions, Town Manager | | |
| Maxtutis, Jeffrey | TAC, Pct. Rep. 15-21, Vice Chair | Boards & Commissions, Town Manager | | |
| Mayo-Wells, Doug | Sustainable Transportation, ABAC | | | |
| Mahon, Diane M. | Select Board, Vice Chair, 2026 | | (781) 646-9038 | DMahon@town.arlington.ma.us |
| Mahon, Diane M. | School Enrollment Task Force, Select Board | Town Manager | | DMahon@town.arlington.ma.us |
| McCarthy, William | Public Memorial Committee | Boards & Commissions, Town Manager | | |
| Martin, Anna | Prevention Services Manager | Health & Human Services | (781) 316-3193 | amartin@town.arlington.ma.us |
| Mirak, Jill | Parking Advisory Committee, Chamber of Commerce | | | |
| Mayer, Leslie | Park & Recreation Commission, 2024 | | | lmayer@town.arlington.ma.us |
| McBride, Brian | Open Space Committee, Resident | | | |
| Morgan, David | Open Space Committee, Planning Department | | | |
| Milan, Charlotte | Municipal Vulnerability Preparedness, Recycling Coordinator | | | |
| Moulton, Brucie | Municipal Vulnerability Preparedness, Citizen | | | |
| McCabe, Charlie | Minuteman Bikeway 25th Anniversary Committee | | | |
| McDonnell, Andrew | Minuteman Bikeway 25th Anniversary Committee | | | |
| Moulton, Brucie | Minuteman Bikeway 25th Anniversary Committee | | | |
| McNulty, Julie | Master Plan Update Advisory Committee | Town Manager | | |
