| Kraft, Matthew | Recreation Leader, Senior | Recreation & Senior Services | | |
| Kopshever, Daniel | Planner, Assistant | Community Development | 949-644-3235 | |
| Kolodge, Scott | Electrical & Instrumentation Specialist | Utilities | 949-718-3435 | |
| Knipe, Kenneth | Building Inspector II | Community Development | 949-644-3263 | |
| Kluve, John | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3355 | |
| Klentos, Konstantinos | Recreation Coordinator, Assistant | Recreation & Senior Services | | |
| Kittleson, Zachariah | Lifeguard I | Fire | | |
| Kiser, Johann | Senior Pool Lifeguard | Recreation & Senior Services | | |
| Kimoto, Michael | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3355 | |
| Kime, Justin | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Kimble, Landon | Lifeguard I | Fire | | |
| Kim, Theodore | Fiscal Clerk, Senior | Finance | 949-644-3052 | |
| Kikawa, Jeffrey | Lifeguard II | Fire | | |
| Kiatkwankul, Vilasinee | IT Supervisor | City Manager | 949-644-3093 | |
| Khalil, Omar | Management Analyst | Public Works | 949-644-3013 | |
| Keyes, Brendan | Firefighter Paramedic 112 Hour (On Or After 1-1-2016) | Fire | 949-644-3355 | |
| Kessler, Joanne | Fiscal Specialist | Finance | 949-644-3199 | |
| Kern, Skylynn | Library Clerk I | Library - City | 949-717-3851 | |
| Kerins, Dana | Lifeguard I | Fire | | |
| Kent, Brandon | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
