| Staff | Title | Departments | Phone | Email |
|---|
| Muniz, Mandy | Deputy | Constable Precinct 1 | | |
| McClure, C. | Deputy | Sheriff | (361) 887-2248 | |
| Munguia, Diana | Elections Manager | County Clerk | (361) 888-0580 | |
| McCoy, Timothy J. | Judge | County Court at Law 5 | | |
| McCauley, Michael | Judge | 28th District Court | | |
| Medary, Missy | Judge | 347th District Court | | |
| Moreno, Lesley | Legal Secretary | Public Defender | | Email |
| McClure, Christina | Lieutenant | Constable Precinct 2 | | |
| Motor Vehicle | Main Line | Tax Assessor/Collector | (361) 888-0459 | |
| Moore, Sophie | Prosecutor | 28th District Court | (361) 888-0410 | Email |
| Moreno, Yolanda | Senior Accounting Assistant | Public Works | (361) 888-0490 | Email |