| Staff | Title | Departments | Phone | Email |
|---|
| Mahon, Adam | Officer | Police | (414) 762-8200 ext. 8135 | Email |
| Maier, Nicole | Dispatcher | Police | (414) 762-8200 ext. 8838 | Email |
| Maksimovic, Cindy | Account Clerk III | Public Works | (414) 570-5682 | Email |
| Marshall, Lisa | Alderperson, District 4 | Mayor & Council | (414) 807-3337 | Email |
| Martin, John | Battalion Chief of Operations | Fire | (414) 570-5643 | Email |
| Martinez, Juan | Engineering Technician | Engineering | (414) 766-7031 | Email |
| McQuestion, Anthony | Lieutenant, Detective Bureau | Police | (414) 766-7631 | Email |
| Melcher, Jonathan | Officer | Police | (414) 762-8200 ext. 8147 | Email |
| Melcher, Nikkita | Clerk | Police | (414) 766-7657 | Email |
| Miller, Brent | Assistant IT Director | Information Technology | (414) 766-7000 | Email |
| Miller, Christa | Deputy Clerk | Clerk's Office | (414) 766-7022 | Email |
| Moczynski, Jason | Officer | Police | (414) 762-8200 ext. 8186 | Email |
| Moehle, Bob | Plumbing Inspector | Inspection | (414) 766-7002 | Email |
| Monroe, Sam | City Assessor | Assessor's Office | (414) 766-7069 | |
| Moraza, Jacqueline | Dispatcher | Police | (414) 762-8200 ext. 6855 | Email |
| Municipal Court | | Municipal Court | (414) 766-7621 | Email |
| Murphy, Mandi | Dispatcher | Police | (414) 762-8200 ext. 6853 | Email |
| Musa, Mike | Sergeant, 1st Shift | Police | (414) 766-7639 | Email |
