| Deanda, Tawny | Administrative Assistant To The HR Director | Human Resources | 949-644-3298 | |
| Debella, Andrew | Lifeguard I | Fire | | |
| Delajara, Jose | Lifeguard II | Fire | | |
| Delorme, Lucie | Management Analyst, Senior | Public Works | 949-644-3394 | |
| Derhovanesian, Edmond | Equipment Mechanic I | Public Works | 949-644-3063 | |
| Devincenzo, Caden | Lifeguard I | Fire | | |
| Devoy, Lauren | Administrative Assistant To The City Attorney | City Attorney | 949-644-3131 | |
| Digiovanna, Michael | Recreation Leader, Senior | Recreation & Senior Services | | |
| Digiovanna, Susan | Recreation Supervisor | Recreation & Senior Services | 949-718-1825 | |
| Dillman, Jordan | Recreation Leader, Senior | Recreation & Senior Services | | |
| Dingwall, Matthew | Recreation Supervisor | Recreation & Senior Services | 949-644-3152 | |
| Dobbs, Makena | Lifeguard I | Fire | | |
| Dopudja, Jacob | Code Enforcement Officer I | Community Development | 949-718-3273 | |
| Doughty, Anne | Recreation Supervisor | Recreation & Senior Services | 949-718-1822 | |
| Duffy, Leah | Librarian I | Library - City | 949-717-3833 | |
| Dufresne, Charlie | Lifeguard I | Fire | | |
| Duhamel, Anthony | Library Assistant | Library - City | 949-644-3075 | |
| Dulu, Christian | IT Analyst | City Manager | 949-644-3096 | |
| Duncan, Charles | Fire Captain 112 Hours | Fire | 949-644-3355 | |
| Duncan, Julie | Library Clerk, Senior | Library - City | 949-717-3822 | |
