| Kimoto, Michael | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3355 | |
| Kiser, Johann | Senior Pool Lifeguard | Recreation & Senior Services | | |
| Kittleson, Zachariah | Lifeguard I | Fire | | |
| Klentos, Konstantinos | Recreation Leader, Senior | Recreation & Senior Services | | |
| Kluve, John | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3355 | |
| Knipe, Kenneth | Building Inspector II | Community Development | 949-644-3263 | |
| Kolodge, Scott | Electrical & Instrumentation Specialist | Utilities | 949-718-3435 | |
| Kopshever, Daniel | Planner, Assistant | Community Development | 949-644-3235 | |
| Kraft, Matthew | Recreation Leader, Senior | Recreation & Senior Services | | |
| Krinski, Carl | Recreation Leader, Senior | Recreation & Senior Services | | |
| Kubischta, Melissa | Civil Engineer - Plan Check, Principal | Community Development | 949-644-3278 | |
| Lagrotta, Brandon | Lifeguard II | Fire | | |
| Lamm, Ashley | Paralegal | City Attorney | 949-644-3191 | |
| Lane, Steven | Building Inspector, Principal | Community Development | 949-644-3264 | |
| Langston, Melissa | Library Page | Library - City | 949-717-3851 | |
| Lanning, Lyla | Lifeguard I | Fire | | |
| Larson, Lilyanna | Lifeguard I | Fire | | |
| Laser, Joseph | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3104 | |
| Lauderdale, Jon | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Lawrence, Kyle | Lifeguard II | Fire | | |
