| Mullinax, Carrera | Management Analyst | Community Development | 949-644-3206 | |
| Mesropian, Sabrina | Management Analyst, Assistant | Utilities | 949-718-3404 | |
| Myers, Rochelle | Management Analyst, Senior | Finance | 949-644-3022 | |
| Murillo Lopez, Salvador | NULL | Public Works | | |
| Murillo, Carlos | NULL | Public Works | | |
| Mendoza-Suarez, Evangelia | NULL | Public Works | | |
| Mendoza De Ordonez, Maria | NULL | Public Works | | |
| Mendoza, Jose | NULL | Public Works | | |
| Mendoza, Norma | NULL | Public Works | | |
| Mejia, Jose | NULL | Public Works | | |
| Mejia, Rosario | NULL | Public Works | | |
| Mejia, Susana | NULL | Public Works | | |
| Mejia, Maria | NULL | Public Works | | |
| Marlin, Kevin | NULL | Public Works | | |
| Marlen-Starr, Spencer | NULL | Public Works | | |
| Maravillamendoza, Ana | NULL | Public Works | | |
| Maravillamendoza, Kembily | NULL | Public Works | | |
| Mejia, Ronald | Permit Technician I | Community Development | 949-644-3251 | |
| Melero, Stephanie | Recreation Coordinator | Recreation & Senior Services | 949-718-1827 | |
| Myers, Jordyn | Recreation Leader, Senior | Recreation & Senior Services | | |
