| Librando, Davnette | Accountant, Senior | Finance | 949-644-3243 | |
| Lim, Jeremiah | Accountant, Senior | Finance | 949-644-3242 | |
| Lindeman, Marie | Administrative Assistant | Public Works Municipal Operations | 949-644-3061 | |
| Lane, Steven | Building Inspector, Principal | Community Development | 949-644-3264 | |
| La bare, Richard | Building Inspector, Senior | Community Development | 949-644-3261 | |
| Leung, Grace | City Manager | City Manager | 949-644-3233 | |
| Liu, Zhengyang | Civil Engineer - Plan Check | Community Development | 949-644-3202 | |
| Loo, Bryan | Civil Engineer, Associate | Public Works | 949-644-3324 | |
| Loke, Eric | Civil Engineer, Senior | Public Works | 949-644-3336 | |
| Link, Harold | Electrical & Instrumentation Specialist | Public Works Municipal Operations | 949-718-3471 | |
| Lucas, Alexis | Fire Battalion Chief | Fire | 949-644-3368 | |
| Long, Jacob | Fire Captain 112 Hours | Fire | 949-644-3355 | |
| Lazar, Garrick | Fire Captain 112 Hours | Fire | 949-644-3104 | |
| Liberto, Michael | Fire Captain 112 Hours | Fire | 949-644-3104 | |
| Lunde, Ty | Fire Captain 112 Hours | Fire | 949-644-3374 | |
| Lauderdale, Jon | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Leith, Joshua | Fire Services Coordinator | Fire | | |
| Laser, Joseph | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3104 | |
| Leftige, Jason | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3104 | |
| Levins, Adam | Firefighter Paramedic 112 Hour (On Or After 1-1-2016) | Fire | 949-644-3355 | |
