| Angeloff, Anne-Marie | Library Assistant | Library - City | 949-717-3861 | |
| Anderson, Steven | Department Assistant | Finance | 949-644-3032 | |
| Anderson, Matthew | Fire Engineer 112 Hour | Fire | 949-644-3355 | |
| Anderson, Jennifer | Purchasing And Contracts Administrator | Finance | 949-644-3080 | |
| Anderson, Bryce | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3355 | |
| Andersen, Leonard | Facilities Maintenance Worker II | Recreation | | |
| Anderle, Robert | Recreation Leader | Recreation | | |
| Amling, Caroline | Lifeguard I | Fire | | |
| Ambrose, Trevor | Lifeguard II | Fire | | |
| Ambrose, Madilynn | Lifeguard I | Fire | | |
| Amat, Alex | Fire Captain 112 Hours | Fire | 949-644-3104 | |
| Aman, Matthew | Public Works Inspector II | Public Works | 949-718-1850 | |
| Alvidrez, Michael | Utilities Crew Chief | Utilities | 949-718-3419 | |
| Alvarez, Emily | Recreation Leader | Recreation | | |
| Almendralo, Rodi | Civil Engineer, Associate | Public Works | 949-644-3334 | |
| Al-Imam, Jason | Finance Director/City Treasurer | Finance | 949-644-3126 | |
| Ali, Shan | Intern | Public Works Municipal Operations | 949-718-3403 | |
| Alexander, Trasara | Recreation Leader, Senior | Recreation | | |
| Alexander, Erin | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Alexander, Brason | Recreation & Senior Services Manager | Recreation | 949-644-3150 | |
