| Moore, Chris | Long Range Planning Committee | Boards & Commissions | | |
| Mongold, Neal | Affordable Housing Trust Fund Board | Town Manager | | |
| Mirak, Jill | Parking Advisory Committee, Chamber of Commerce | | | |
| Miller, Cheryl | Master Plan Update Advisory Committee | | | |
| Milan, Charlotte | Municipal Vulnerability Preparedness, Recycling Coordinator | | | |
| Migliazzo, Sophie | Finance Committee (Prct. 4, 2024) | | | |
| Mietinen, Pasi | Clean Energy Future | | | |
| Michele, Hassler | Cemetery Commission, (6/2025) | | | |
| Miano, Mark | Building Maintenance Comm | Boards & Commissions, Town Manager | | |
| Meyer, Johanna | Envision Arlington Standing Committee | Boards & Commissions | | |
| Melofchik, Beth | Historic Districts Commission, Broadway District, 6/2026 | Boards & Commissions, Town Manager | | |
| Melly, Ryan | Local Emergency Planning Committee, AFD Deputy Chief | Boards & Commissions, Town Manager | | |
| Meister, Pamela | Historical Commission | Boards & Commissions | | |
| Meeks, Amos | Clean Energy Future Committee | | | |
| McNulty, Julie | Master Plan Update Advisory Committee | Town Manager | | |
| McNeill, Adam | Bicycle Advisory Committee (ABAC), 6/30/2025 | | | |
| McMurray, Brian | Arlington Cultural Council, Co-Chair, 6/30/2024 | Town Manager | | |
| McKenzie, Julie | Human Resource Board, 2017 | | (781) 646-5315 | |
| McKenna, David | Finance Committee (Prct. 21, 2024) | | | |
| McDonnell, Andrew | Minuteman Bikeway 25th Anniversary Committee | | | |
