| Staff | Title | Departments | Phone | Email |
|---|
| Oseguera, Armando | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Osborne, Sawyer | Lifeguard I | Fire | | |
| Ortiz, Ryan | Lifeguard I | Fire | | |
| Olsen, Kaden | Lifeguard I | Fire | | |
| Obrien, James | Firefighter Paramedic 112 Hour (On Or After 1-1-2016) | Fire | 949-644-3355 | |
| O'Rourke, Brian | Assistant Chief, Lifeguard Operations | Fire | 949-644-3045 | |
| O'Leary, Ryan | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3104 | |
| O'Keefe, David | Lifeguard II | Fire | | |
| Nowakowski, Dylan | Fire Engineer 112 Hour | Fire | 949-644-3355 | |
| Novak, Adam | Fire Battalion Chief | Fire | 949-644-3104 | |
| Nevins, Noah | Lifeguard I | Fire | | |
| Nessa, Joel | Fire Captain 112 Hours | Fire | 949-644-3104 | |
| Navarrete, Genesis | Lifeguard II | Fire | | |
| Natelborg, Matthew | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3101 | |
| Namdar, Keegan | Lifeguard I | Fire | | |
| Munchoff, Finley | Lifeguard I | Fire | | |
| Moylan, Wesley | Lifeguard I | Fire | | |
| Morrison, Benjamin | Support Services Aide | Fire | 949-644-3114 | |
| Morrison, Mary | Lifeguard II | Fire | | |
| Morris, Nadine | Fire Inspector, Senior | Fire | 949-644-3105 | |
