| Mack, Dean | Deputy Director, Economic Development | Economic Development Administration | (203) 946-5335 |
| Maidelis, Meghan | Fire Inspector | Fire Services | (203) 946-6224 |
| Mallison Jr., Gerald | Management Policy Analyst | Finance Department | (203) 946-7905 |
| Mancini, Kristin | Technical Services (Cataloging & Acquisitions) | Public Library | (203) 946-8127 |
| Mancuso, Sam | Overdose Prevention Project Manager | Health Department | (203) 946-3031 |
| Mariotti, Anna | Economic Development Officer / Project Manager | Economic Development Administration | (203) 946-3276 |
| Marquez Perez, Kengli | Lead Poisoning Inspector | Health Department | (203) 946-6798 |
| Martin, Stephen | Inspector/Investigator | Fire Services | (203) 946-4944 |
| Martinez, Benjamin | Site Equipment Resource Manager | | (203) 946-8199 |
| Martinez, Edgar | Lead Poisoning Inspector | Health Department | |
| Martinez, John | Inspector/Investigator | Fire Services | (203) 946-7656 |
| Martorana, Rory | Public Services Administrator: Comm, Market, Tech | Public Library | (203) 946-2283 |
| Massey, Jarmella | Program Manager - Section 8 | Livable City Initiative | (203) 946-7588 |
| Maza, Misty | Legislative Aide II | Board of Alders Legislative Services | (203) 946-7288 |
| Mazzadra, Rick | Housing Code Inspector | Livable City Initiative | (203) 946-8250 |
| McDonald, Kamryn | Grant Writer and Policy Coordinator | Office of Policy, Management, and Grants | (203) 946-4982 |
| McLaurin, Elijah | Neighborhood Specialist | Livable City Initiative | (203) 946-2333 |
| Medley, Krystal | Health Programs Director | Health Department | |
| Mendez, Carmen | Neighborhood Specialist | Livable City Initiative | (203) 946-7733 |
| Merly, Joseph | Asst. Corp. Counsel | Corporation Counsel | (203) 946-7921 |
| Mignosa, Robert | Management & Policy Analyst | | (203) 946-6342 |
| Miranda-Foreman, Noemi | Paralegal | Economic Development Administration | (203) 946-2569 |
| Miranda-Noad, Maria | Executive Administrative Assistant | Community Services Administration | (203) 946-4943 |
| Mishra, Prajna | Procurement Specialist | Finance – Purchasing | (203) 946-8204 |
| Mitchell, Darina | Community Liaison Trainer | Community Services Administration | (203) 909-0983 |
| Mitchell, Lorena | Coordinator Office of Community Health Initiatives | Community Services Administration | (203) 946-6759 |
| Mitchell, Tracey | Title Maintenance Clerk | Assessor’s Office | (203) 946-2323 |
| Mitra, Soma | Young Minds & Family Learning | Public Library | (203) 946-8132 |
| Mixsell, Anastasia | Tree System Coordinator | Parks Department | (203) 946-8092 |
| Monaco, Sumalee | Administrative Asstistant | Livable City Initiative | (203) 946-4994 |
| Moore-Fox, Lisa | Executive Administrative Assistant | Economic Development Administration | (203) 946-2366 |
| Morales, Jacqueline | Medical Benefits / Wellness Analyst | Human Resources | (203) 946-4973 |
| Moreno, Jeffrey | Project Manager | Economic Development Administration | (203) 946-7731 |
| Moreno, Jeffrey | Project Manager | Housing & Development Administration | (203) 946-7731 |
| Morrison, Kirk | Branch Manager-Fair Haven | Public Library | (203) 946-8116 |
